Connection issues with 4G/LTE - OnePlus 3 Questions & Answers

Hey!
I've had my Oneplus 3 for a couple of weeks now, and I am having major connection issues while using mobile data. Most of the time I am unable to get any connection so I can't even make a phone call. I have read about similar issues and how they have been resolved, but none of the tricks have done it for me. If I enable airplane mode and then disable it, I get a weak connection for a while (maybe 10 minutes). I have two IMEI-codes on my phone, like I should. WiFi connection works well. I am on OOS 3.2.4 at the moment.
Here's a list of all the things that I have tried:
Another SIM-card
Another service provider
Manual APN settings
Different OS versions
Turning radio off and on from the "secret menu" (*#*#4636#*#*). This has the same effect as the airplane mode, which means that I get a weak connection for a moment.
Every bit of help is greatly appreciated.

I had the same problem with 6 ROM (all based on CM). After a day or so i lost connection.
Now i'm on Official CM13 and its all working for 4 days (fingers crossed).
The only thing that i've done different is that i didn't use Titanium Backup and also CMThemer.
I don't know how helpful this is, but that's my experience with the matter.
Cheers !

I am having same issue from the day 1 of my usage. Upgraded OxygenOS, tried different SIMs, changed APN, toggled preferred connection LTE to 3G etc and even on Official Cm13, the issue persists. Even when I am outdoors, the connection is poor and unstable. The same SIM works very well on Oneplus 1 without any issues. I am really fed up and regretting my choice to buy Oneplus 3. Is there any way to solve this issue? I stay in Dubai and there are no Oneplus service centers here and neither I can return the device, as the return period has expired.

Related

HELP! Major network problem :(

Hi all,
I got my Desire from the British carrier "Three" last April when it came out. It was stocked with Android 2.1 but the phone was unbranded and not locked so making life much easier.
I rooted the phone weeks later and flashed a number of various roms and radios (usually newest ones recommended by rom developers) and just played around with them. No problems ever occured and everything went smooth.
However a while ago (about 4 weeks I would say) strange thing happened: when the carrier 3 does not gave 3G coverage it usually switches to other network's 2G roaming service. It is also possible to switch to 2G permanently by forcing it via phone settings. It stopped working in Central London for me while still worked elsewhere (very strange) so I had to rely only on 3G service. I thought it was a network issue at first but now I'm not sure.
Later (or at least so I noticed) the connectivity started fooling around: even when standstill (i.e. NOT in a train, bus etc.) and staying at home the network connectivity just disappears all of a sudden. Sometimes it comes back by itself and sometimes I just do it manually via netowking settings. This is much more common when on the move (i.e. on the train etc. even though it never used to happen before). Moreover, sometimes while manually searching for network it says "your sim would not allow to connect to this network" even though I try to connect to the correct one. Instead I switch "WCDMA only" and "WCDMA/GSM auto" options and connection comes back by itself. Then it disappears again after a while. Even more strangely, connection does not disappear if I am talking on the phone with someone but in other situations (such as browsing internet) it just disappears and I see no bars in network reception indicator and cannot connect to internet or make phone calls.
I know 3 has a reputation (deserved or not) of having "bad" network but I don't think this has anything to do with that. My Desire used to work fine before and never had such problems (except in specific spots which have bad coverage). Moreover, I have another old phone and it works fine without any problems with networking while the Desire messes around. I am sure it has either to do with firmware or, worse, hardware.
I have tried a number of roms, radios and settings and it's the same thing all over.
If nothing works is there a way I can still bring it to warranty service after flashing "unrooted" stock rom if there is one available? I'm so frustrated because I have no idea why this is happening.
Its because three have switched off 2g roaming I have the same problem. Search Google
Sent from my HTC Desire using XDA App

Mesh WiFi issues after latest update

My wife has the S8 and I have the S8+. After the latest update (July 9-10'ish) both of our phones are having problems with our Mesh WiFi, but not our non-Mesh WiFi. We don't have issues with the connectivity to the actual WiFi, that always stays connected, but every few minutes, we'll get an exclamation point next to the WiFi signal meter, and our Internet connectivity drops. When I check WiFi connections during this time, it shows "Internet may not be available". Then, after 1-3 minutes or so, it's working fine again. While this is happening, none of our other devices have any problems with Internet connectivity.
T-Mobile had me boot into Safe Mode, and the problem didn't happen at all in safe mode. So, I did a master rest, and with just factory apps installed, it was happening again. T-Mobile asked me to wipe the cache partition. While trying to boot to that menu, my phone went into a boot loop, then after trying several different button combinations, it just turned off and wouldn't power back on again. So, T-Mobile sent me a replacement. Since receiving the replacement, I have not installed the update, and I have not had the problem on my phone at all. But, there's still my wifes phone. T-Mobile tells me I'm the only one having this problem, so they don't know what the solution is.
Our Mesh WiFI system is fairly new, so I kept the old WiFI active as a fall back option. There are no problems when connecting to that SSID, so I'm thinking the update has caused some issues when jumping between access points on the mesh system. I was also thinking maybe it's a double NAT issue, since my modem doesn't have a true bridge mode option. (My modem hands my mesh WiFi router a 192.168.1.xxx IP, but my devices that connect to the mesh WiFi get a 192.168.0.xxx IP) I tried putting the Mesh WiFi in the DMZ and making sure it gets the public IP. That didn't work. The WiFi manufacturer had me open ports 500 & 4500 to the WiFi router. That didn't work.
Does anyone have any other ideas for me? At the point, T-Mobile is telling me that it's my WiFI because it doesn't happen when connected to the non-mesh WiFi. But, it didn't start happening until the last update, and it's not happening on my replacement phone. We rely very heavily on WiFi calling, so this has been problematic. Obviously I can connect my wife's phone to the old system, but we don't get full coverage in our house from it, which is why we went to a mesh system.
I welcome and appreciate all suggestions.
Thank you
JTB
I have the same problem with my non-mesh Google Wifi router occasionally. it's annoying.
jtbarnes said:
My wife has the S8 and I have the S8+. After the latest update (July 9-10'ish) both of our phones are having problems with our Mesh WiFi, but not our non-Mesh WiFi. We don't have issues with the connectivity to the actual WiFi, that always stays connected, but every few minutes, we'll get an exclamation point next to the WiFi signal meter, and our Internet connectivity drops. When I check WiFi connections during this time, it shows "Internet may not be available". Then, after 1-3 minutes or so, it's working fine again. While this is happening, none of our other devices have any problems with Internet connectivity.
T-Mobile had me boot into Safe Mode, and the problem didn't happen at all in safe mode. So, I did a master rest, and with just factory apps installed, it was happening again. T-Mobile asked me to wipe the cache partition. While trying to boot to that menu, my phone went into a boot loop, then after trying several different button combinations, it just turned off and wouldn't power back on again. So, T-Mobile sent me a replacement. Since receiving the replacement, I have not installed the update, and I have not had the problem on my phone at all. But, there's still my wifes phone. T-Mobile tells me I'm the only one having this problem, so they don't know what the solution is.
Our Mesh WiFI system is fairly new, so I kept the old WiFI active as a fall back option. There are no problems when connecting to that SSID, so I'm thinking the update has caused some issues when jumping between access points on the mesh system. I was also thinking maybe it's a double NAT issue, since my modem doesn't have a true bridge mode option. (My modem hands my mesh WiFi router a 192.168.1.xxx IP, but my devices that connect to the mesh WiFi get a 192.168.0.xxx IP) I tried putting the Mesh WiFi in the DMZ and making sure it gets the public IP. That didn't work. The WiFi manufacturer had me open ports 500 & 4500 to the WiFi router. That didn't work.
Does anyone have any other ideas for me? At the point, T-Mobile is telling me that it's my WiFI because it doesn't happen when connected to the non-mesh WiFi. But, it didn't start happening until the last update, and it's not happening on my replacement phone. We rely very heavily on WiFi calling, so this has been problematic. Obviously I can connect my wife's phone to the old system, but we don't get full coverage in our house from it, which is why we went to a mesh system.
I welcome and appreciate all suggestions.
Thank you
JTB
Click to expand...
Click to collapse
I'm having the same exact problem with my S8+ and my netgear orbi, all was good until about a month ago, and I've tried pretty much everything, and the exclamation point still comes every few minutes. I can't wait to get rid of this phone honestly. And I've had EVERY Samsung phone to date, and this one has given me the most problems by far. I am on my 5th S8+. HURRY NOTE 8!
Running Luma mesh network... Have the same issue on my S8+ after the update...
Definitely due to the update... No issue prior
whelmar said:
Running Luma mesh network... Have the same issue on my S8+ after the update...
Definitely due to the update... No issue prior
Click to expand...
Click to collapse
Had the same issue. Go into developer options and turn on Wi-Fi verbose logging. Fixed it for me. Try it out
jtbarnes said:
My wife has the S8 and I have the S8+. After the latest update (July 9-10'ish) both of our phones are having problems with our Mesh WiFi, but not our non-Mesh WiFi. We don't have issues with the connectivity to the actual WiFi, that always stays connected, but every few minutes, we'll get an exclamation point next to the WiFi signal meter, and our Internet connectivity drops. When I check WiFi connections during this time, it shows "Internet may not be available". Then, after 1-3 minutes or so, it's working fine again. While this is happening, none of our other devices have any problems with Internet connectivity.
T-Mobile had me boot into Safe Mode, and the problem didn't happen at all in safe mode. So, I did a master rest, and with just factory apps installed, it was happening again. T-Mobile asked me to wipe the cache partition. While trying to boot to that menu, my phone went into a boot loop, then after trying several different button combinations, it just turned off and wouldn't power back on again. So, T-Mobile sent me a replacement. Since receiving the replacement, I have not installed the update, and I have not had the problem on my phone at all. But, there's still my wifes phone. T-Mobile tells me I'm the only one having this problem, so they don't know what the solution is.
Our Mesh WiFI system is fairly new, so I kept the old WiFI active as a fall back option. There are no problems when connecting to that SSID, so I'm thinking the update has caused some issues when jumping between access points on the mesh system. I was also thinking maybe it's a double NAT issue, since my modem doesn't have a true bridge mode option. (My modem hands my mesh WiFi router a 192.168.1.xxx IP, but my devices that connect to the mesh WiFi get a 192.168.0.xxx IP) I tried putting the Mesh WiFi in the DMZ and making sure it gets the public IP. That didn't work. The WiFi manufacturer had me open ports 500 & 4500 to the WiFi router. That didn't work.
Does anyone have any other ideas for me? At the point, T-Mobile is telling me that it's my WiFI because it doesn't happen when connected to the non-mesh WiFi. But, it didn't start happening until the last update, and it's not happening on my replacement phone. We rely very heavily on WiFi calling, so this has been problematic. Obviously I can connect my wife's phone to the old system, but we don't get full coverage in our house from it, which is why we went to a mesh system.
I welcome and appreciate all suggestions.
Thank you
JTB
Click to expand...
Click to collapse
Go into developer settings and turn on Wi-Fi verbose logging.
Had same issue and now it's gone. Hope it helps
richieandsandy said:
Go into developer settings and turn on Wi-Fi verbose logging.
Had same issue and now it's gone. Hope it helps
Click to expand...
Click to collapse
Seems to help, thanks!!
richieandsandy said:
Go into developer settings and turn on Wi-Fi verbose logging.
Had same issue and now it's gone. Hope it helps
Click to expand...
Click to collapse
Thank you! I just changed that setting. I really hope that works!
Other fix is enabling guest network on your router. It worked for me with Netgear Orbi.
I have an orbi and the above fix didn't quite fix my troubles. After enabling guest mode, then what? Use guest mode? Or does just the act of enabling guest mode change something? Thanks in advance.
Wi-Fi Verbose Logging
Yep! This is a problem the carries and Samsung have chosen to ignore so far. I have the exact same issue with two S8's in my household. Everything, all devices, LG, Apple, HTC, Google, Amazon, PC's, etc., including the S8's worked on our mesh wifi network until the two S8's took on the latest update. After that point neither S8 device would consistently work properly on the mesh network. While all other devices, including a Note 5 and Samsung Smart TV, among a plethora of other devices, continued to work flawlessly. It is definitely tied to the latest update on the S8 devices. I reset the wifi, the phones, etc., including factory resets but that did not solve the problem. Verizon sent 2 replacement phones and we have not allowed the latest update to load on the phones and the replacement phones are working perfectly! The latest software version that screws up mesh wifi connectivity is: NRD90M.G950USQU1AQG4. Beware. So far, neither Verizon or Samsung will acknowledge the issue. Only after hours of trouble shooting and persistence on my part about this issue being a well documented situation in on-line forums did they respond by saying they found one case similar to mine but they did not see this as a wide spread issue. Well, for anyone with a mesh wifi network, this is a big issue and irritating as heck! Come on Samsung! Own up to the issue, support your customers, and fix the problem. The evidence that there is a problem at this point is pretty convincing. All one has to do is go on-line and search the issue and bam, there it is. All somebody at Samsung has to do is take an S8 load the latest update and try it on a mesh wifi network. Really try it that is... It work at first but as soon as the mesh network moves the device to a channel or frequency that is less congested, the device will lose connectivity. Sometimes it is sporadic but eventually it becomes a more persistent problem to the point of uselessness. Either put out a patch or push out the wifi portion prior update for us to revert back to. Don't call us liars and ignore the issue. Hard to achieve customer loyalty and retention with behavior like that. I've already had to muddle through the Note 7 fiasco with the 3 recalls and final discontinuing of the device itself. Samsung, don't leave me hanging again.
UPDATE:
Turning on the Wi-Fi verbose logging did not solve my issue. It seemed to work at first. However, after a few minutes it said it was no longer connected to the web when trying to load some very common url's. However, this time there is no "!" next to the Wi-Fi signal on the S8. It now just stops working. Wish I hadn't let it update on the replacement phone. Again working just fine before the NRD90M.G950USQU1AQG4 update.
Help....anyone!?
dave812 said:
I have an orbi and the above fix didn't quite fix my troubles. After enabling guest mode, then what? Use guest mode? Or does just the act of enabling guest mode change something? Thanks in advance.
Click to expand...
Click to collapse
After enabling guest-network, forget the main SSID and connect to guest-network. If you "allow guest to see each other..." you will be able to see other devices, like printer, Sonos, Roku, etc.
I tried the fix above and did not work for me either. Going back to login in in guest-network.
You can also see this: https://us.community.samsung.com/t5/forums/v3_1/forumtopicpage/board-id/GS8QA/thread-id/534/page/12

Please post radio issues (and fixes) here

**EDIT**
Forgot the random outgoing call issue.
Since getting my OP8P, it doesn't seem like any of the radio issues have really been satisfactorily addressed. I'm not sure if there is anything that can be done on our end to fix them, but I figured I'd create a thread to track them, and fix them if possible.
Please include your carrier, or any other differentiating factors:
MMS issues (T-Mobile): MMS messages do not come in reliably or at all with wifi enabled. SMS and RCS messages are not affected.
Fix: (Workaround) Disable VoWifi, which doesn't seem to work on as many APs as the OP7P and prior did. If that doesn't work, turn off wifi altogether to allow messages to send/receive.
--------------------------------------------------------
Wifi calling issues (T-Mobile): Wifi calling will not stay activated. Icon appears for about 30 seconds after turning on wifi. Also seems to be affecting MMS messages not sending/receiving when connected to WiFi, and potentially outgoing calls not going through reliably.
Fix: (Workaround) Possibly affected by APs that allow TKIP encryption method. Reports of only allowing AES/CMAK helping. TKIP has known vulnerabilities, but older devices may still require it be enabled.
--------------------------------------------------------
Wifi connection issues: Wifi seems to go dead 1-3 times a day. Wireless still shows a strong connection, but no data actually passes (SMS still works).
Fix: (Workaround) toggle wifi
--------------------------------------------------------
Poor 5G performance (T-Mobile): While this could be a T-Mobile issue, as they seem to have turned on 5G over most of our area using UHF bands (300mhz to 3ghz), performance is pretty choppy. Uploads seem to be more negatively affected, with speeds less than 1mbps at times. Download speeds can be up to LTE speeds, but often are not, and are almost always jumpy and not smooth during speed tests.
Potential fix: Disable 5G under: SIM & network settings > Preferred network type
--------------------------------------------------------
Occasion outbound call issue: Sometimes making an outgoing call takes 2 or 3 tries. I can't remember the error, off the top of my head, but it's something like "service not available".
--------------------------------------------------------
Can ONLY receive MMS on WiFi calling not on mobile data, SMS not affected. (details here)
Fix: use 3rd party SMS app, revoke all permissions from stock app, disable stock app
Flapjack said:
Since getting my OP8P, it doesn't seem like any of the radio issues have really been satisfactorily addressed. I'm not sure if there is anything that can be done on our end to fix them, but I figured I'd create a thread to track them, and fix them if possible.
Please include your carrier, or any other differentiating factors:
MMS issues (T-Mobile): MMS messages do not come in reliably or at all with wifi enabled. SMS and RCS messages are not affected.
Fix: (Workaround) Turn off wifi. Not really feasible, though... especially those not on unlimited data plans.
--------------------------------------------------------
Wifi calling issues (T-Mobile): Wifi calling will not stay activated. Icon appears for about 30 seconds after turning on wifi.
Fix: (Workaround) Possibly affected by APs that allow TKIP encryption method. Reports of only allowing AES/CMAK helping. TKIP has known vulnerabilities, but older devices may still require it be enabled.
--------------------------------------------------------
Wifi connection issues: Wifi seems to go dead 1-3 times a day. Wireless still shows a strong connection, but no data actually passes (SMS still works).
Fix: (Workaround) toggle wifi
--------------------------------------------------------
Poor 5G performance (T-Mobile): While this could be a T-Mobile issue, as they seem to have turned on 5G over most of our area using UHF bands (300mhz to 3ghz), performance is pretty choppy. Uploads seem to be more negatively affected, with speeds less than 1mbps at times. Download speeds can be up to LTE speeds, but often are not, and are almost always jumpy and not smooth during speed tests.
Fix: None, unless there's a way to disable 5G for now (if that would even help).
Click to expand...
Click to collapse
You can disable 5G in the SIM and Network settings ??*
With my old phone if I disable wifi it connects to Lte instantly and I can start surfing. With my 1+ now if I disable wifi it takes about 10sec until there's Lte but I can't start surfing. I have to switch from Lte to 2g and back to get it working. Same Sim in both phones
XD-MOD2-9MM said:
You can disable 5G in the SIM and Network settings ??*
Click to expand...
Click to collapse
Good grief. I have no idea how I missed that. Thanks! I'll test and update the thread if LTE performance seems better than 5G. This very well could be a T-Mobile thing, since they just recently turned it on in my area.
Flatric said:
With my old phone if I disable wifi it connects to Lte instantly and I can start surfing. With my 1+ now if I disable wifi it takes about 10sec until there's Lte but I can't start surfing. I have to switch from Lte to 2g and back to get it working. Same Sim in both phones
Click to expand...
Click to collapse
I have noticed the exact same thing. I'm not sure why it takes so long... especially with dual-channel network acceleration enabled (and the fact that VoLTE is established before I shut wifi off).
Flapjack said:
**EDIT**
Forgot the random outgoing call issue.
Since getting my OP8P, it doesn't seem like any of the radio issues have really been satisfactorily addressed. I'm not sure if there is anything that can be done on our end to fix them, but I figured I'd create a thread to track them, and fix them if possible.
Please include your carrier, or any other differentiating factors:
MMS issues (T-Mobile): MMS messages do not come in reliably or at all with wifi enabled. SMS and RCS messages are not affected.
Fix: (Workaround) Turn off wifi. Not really feasible, though... especially those not on unlimited data plans.
--------------------------------------------------------
Wifi calling issues (T-Mobile): Wifi calling will not stay activated. Icon appears for about 30 seconds after turning on wifi.
Fix: (Workaround) Possibly affected by APs that allow TKIP encryption method. Reports of only allowing AES/CMAK helping. TKIP has known vulnerabilities, but older devices may still require it be enabled.
--------------------------------------------------------
Wifi connection issues: Wifi seems to go dead 1-3 times a day. Wireless still shows a strong connection, but no data actually passes (SMS still works).
Fix: (Workaround) toggle wifi
--------------------------------------------------------
Poor 5G performance (T-Mobile): While this could be a T-Mobile issue, as they seem to have turned on 5G over most of our area using UHF bands (300mhz to 3ghz), performance is pretty choppy. Uploads seem to be more negatively affected, with speeds less than 1mbps at times. Download speeds can be up to LTE speeds, but often are not, and are almost always jumpy and not smooth during speed tests.
Fix: None, unless there's a way to disable 5G for now (if that would even help).
--------------------------------------------------------
Occasion outbound call issue: Sometimes making an outgoing call takes 2 or 3 tries. I can't remember the error, off the top of my head, but it's something like "service not available".
Click to expand...
Click to collapse
My wife and I have similar problems with mobile data and wifi both occasionally showing strong signals but requiring a toggle off and back on before data passage resumes. Both OP8P and OP8. Verizon for carrier.
Well, I guess it's good to know it's happening on Verizon too?
Seriously, this needs to be fixed. If it was just one carrier, I could see it getting out the door. But more than one (very different kinds) of carriers is pretty ridiculous.
Issue: can ONLY receive MMS on WiFi calling not on mobile data, SMS not effected.
More details in my thread here: https://forum.xda-developers.com/oneplus-8-pro/help/receive-mms-wifi-calling-tmobile-t4088673
Fix: use 3rd party SMS app, revoke all permissions from stock app, disable stock app
Updated OP.
I've found that disabling Voice over Wifi altogether seems to help with the MMS while on wifi issues. I still get a few that don't go through and have to shut off wifi altogether, but it's much... much better.
I'm wondering if this is also connected to my outgoing call issues. I'll be testing that also.
**EDIT**
While I still think disabling VoWiFi helps, it is still very much a crapshoot whether or not an MMS message will send or receive. Between this and the dual sim issues, I may need to see if OP will let me return this.
No idea if it's related but in comparison to EE, three is absolutely crap. Truly a horrific network, 50% of the coverage and 59% of the speed.
Have noticed that the phone aggressively tries to hand over to WiFi even when I'm not connected.
Removing 5G from the equation helps a lot, least in my instance.
dladz said:
No idea if it's related but in comparison to EE, three is absolutely crap. Truly a horrific network, 50% of the coverage and 59% of the speed.
Have noticed that the phone aggressively tries to hand over to WiFi even when I'm not connected.
Removing 5G from the equation helps a lot, least in my instance.
Click to expand...
Click to collapse
Curious, how are you seeing it's trying to hand over to wifi?
I'm so upset over this stuff. It would be more tolerable if OP had some sort of official status on some of these issues. Ignoring them won't make them go away.
Flapjack said:
Curious, how are you seeing it's trying to hand over to wifi?
I'm so upset over this stuff. It would be more tolerable if OP had some sort of official status on some of these issues. Ignoring them won't make them go away.
Click to expand...
Click to collapse
So it looks for WiFi constantly, also tries to switch between networks. You can disable it
dladz said:
So it looks for WiFi constantly, also tries to switch between networks. You can disable it
Click to expand...
Click to collapse
Are you talking about the "Scanning always available" setting? I already have that disabled. I seem to be ok with 5G lately. Pretty sure the bad upload speeds are just due to T-Mobile working out the bugs.
Flapjack said:
Are you talking about the "Scanning always available" setting? I already have that disabled. I seem to be ok with 5G lately. Pretty sure the bad upload speeds are just due to T-Mobile working out the bugs.
Click to expand...
Click to collapse
Then you're fine. Don't worry about it.
I thought I'd chime in a bit with T-Mobile 5G. Minus specialized cities featuring higher frequency 5G, T-Mobile nationwide works off of the 600Mhz band, AND REQUIRES the 1900Mhz or 2100Mhz 4G LTE band to properly function at this time. So if you experience poor 4G 1900 and 2100 frequency in your area, but strong 5G, it won't work well for you, and you are better off doing 4G LTE 600mhz instead.
Call your local rep and confirm the strength for those two frequencies for you. Just thought I'd chime in about the poor 5G performance nationwide for T-Mobile for some. Nothing to do with the phone exactly.
My OnePlus 8Pro sometimes disconnects several times a day the radio conection. It's hapend with LTE on Telekom. 5G is not available yet. It's happend also in places where I have very good LTE network coverage.
Restart the cell phone is the only option to reconnect.
Switching OFF/ON the Airplane-Mode, reset network settings or a Full Wipe bring no improvement.
I have already replaced the SIM card against a new one by my network provider (Telekom) to rule out a defect.
I also have no problems with my previous device.
So I'm currently using my old device in parallel with a Multi-Sim.
A network fault therefore can be ruled out 100%.
The latest software version has also been installed.
The crash normally occurs while surfing the LTE network and is noticeable that the Internet is unexpectedly no longer working. The Radio display on the phone show me a few minutes more that i have still connection to LTE and than it jump to "no network" as already described, "ONLY" restarting the device allows to log in to the network again.
It was also tried with intelligent network connection or two-channel download acceleration on and off.
With WiFi the internet works continuously.
The Device runs with Stock-Rom.
I also have contacted the OnePlus Support, but maybe someone here has a solution for me.
Many Thanks
Hofitown said:
My OnePlus 8Pro sometimes disconnects several times a day the radio conection. It's hapend with LTE on Telekom. 5G is not available yet. It's happend also in places where I have very good LTE network coverage.
Restart the cell phone is the only option to reconnect.
Switching OFF/ON the Airplane-Mode, reset network settings or a Full Wipe bring no improvement.
I have already replaced the SIM card against a new one by my network provider (Telekom) to rule out a defect.
I also have no problems with my previous device.
So I'm currently using my old device in parallel with a Multi-Sim.
A network fault therefore can be ruled out 100%.
The latest software version has also been installed.
The crash normally occurs while surfing the LTE network and is noticeable that the Internet is unexpectedly no longer working. The Radio display on the phone show me a few minutes more that i have still connection to LTE and than it jump to "no network" as already described, "ONLY" restarting the device allows to log in to the network again.
It was also tried with intelligent network connection or two-channel download acceleration on and off.
With WiFi the internet works continuously.
The Device runs with Stock-Rom.
I also have contacted the OnePlus Support, but maybe someone here has a solution for me.
Many Thanks
Click to expand...
Click to collapse
That is crazy. I think they may have fixed the wifi disconnects for me with the latest OTA, but when I did get them, toggling wifi worked for me. I never had to reboot over it. Your case definitely seems worse. Hopefully you don't have a hardware issue.
Hofitown said:
My OnePlus 8Pro sometimes disconnects several times a day the radio conection. It's hapend with LTE on Telekom. 5G is not available yet. It's happend also in places where I have very good LTE network coverage.
Restart the cell phone is the only option to reconnect.
Switching OFF/ON the Airplane-Mode, reset network settings or a Full Wipe bring no improvement.
I have already replaced the SIM card against a new one by my network provider (Telekom) to rule out a defect.
I also have no problems with my previous device.
So I'm currently using my old device in parallel with a Multi-Sim.
A network fault therefore can be ruled out 100%.
The latest software version has also been installed.
The crash normally occurs while surfing the LTE network and is noticeable that the Internet is unexpectedly no longer working. The Radio display on the phone show me a few minutes more that i have still connection to LTE and than it jump to "no network" as already described, "ONLY" restarting the device allows to log in to the network again.
It was also tried with intelligent network connection or two-channel download acceleration on and off.
With WiFi the internet works continuously.
The Device runs with Stock-Rom.
I also have contacted the OnePlus Support, but maybe someone here has a solution for me.
Many Thanks
Click to expand...
Click to collapse
I have exactly the same issue with the same carrier (Telekom Germany) with 2 SIM cards tested. Gotten worse with the 10.5.9 so I rolled back to 10.5.8 where the issue isn't happening that often. I haven't got this issue when enabling data on my secondary SIM (O2 Germany). I have also tested the new Android 11 beta where I got shortly disconnected from the mobile network and then the LTE+ logo changed to "g" and everything was fine again. The phone was still connected to LTE with full DL speed (did the whole initialisation with mobile data + 20gb music download). However the beta is not usable at this stage. Since I have an unlimited data plan on that Telekom Sim I cloud test the **** out of it and it seems that the disconnect happens when the phone tries to change or adds the cell connection while using data. I have sent OP the required logs and after that they ignored me.. hope they going to fix this as it seems to be a software/compatibility issue with that certain carrier. Also 10.5.9 isn't really coming to German devices with ota so they might know about that issues.
ch1llahh said:
I have exactly the same issue with the same carrier (Telekom Germany) with 2 SIM cards tested. Gotten worse with the 10.5.9 so I rolled back to 10.5.8 where the issue isn't happening that often. I haven't got this issue when enabling data on my secondary SIM (O2 Germany). I have also tested the new Android 11 beta where I got shortly disconnected from the mobile network and then the LTE+ logo changed to "g" and everything was fine again. The phone was still connected to LTE with full DL speed (did the whole initialisation with mobile data + 20gb music download). However the beta is not usable at this stage. Since I have an unlimited data plan on that Telekom Sim I cloud test the **** out of it and it seems that the disconnect happens when the phone tries to change or adds the cell connection while using data. I have sent OP the required logs and after that they ignored me.. hope they going to fix this as it seems to be a software/compatibility issue with that certain carrier. Also 10.5.9 isn't really coming to German devices with ota so they might know about that issues.
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Thanks for the feedback.
That the Problem with 10.5.9 got worse i can confirm. I loaded this Version in Germany by using the Oxygen Updater. But that gives hope to me that it is really just a software issue and no defekt on the device. So I will not send the device to OP for an unnecessary repair in the hope that there will be fixd with an update soon.
On the Facebook Oneplus page I have already heard from some people they have exactly the same problem, all of them use the German Telekom network.
Hopefully you get right, with that presumption, that 10.5.9 isn't really coming on German devices because they know the problem. So the fix will come very fast.
Hofitown said:
Thanks for the feedback.
That the Problem with 10.5.9 got worse i can confirm. I loaded this Version in Germany by using the Oxygen Updater. But that gives hope to me that it is really just a software issue and no defekt on the device. So I will not send the device to OP for an unnecessary repair in the hope that there will be fixd with an update soon.
On the Facebook Oneplus page I have already heard from some people they have exactly the same problem, all of them use the German Telekom network.
Hopefully you get right, with that presumption, that 10.5.9 isn't really coming on German devices because they know the problem. So the fix will come very fast.
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You guys haven't heard any buzz about 10.5.10 yet? I'm on 10.5.10 in the US, which I feel has been a lot more stable than the previous two versions (which had alternating issues for me).
The biggest issue affecting me remains the issues sending MMS while on wifi.

Question Mobile data interruptions on POCO F3 - is there any cure?

Hello, I tried searching on XDA and elsewhere but could not find an answer so I hoping to receive help by writing my issue here.
I have bought two POCO F3's 128GB & 256GB on Amazon & Aliexpress respectively.
They both have the same issue when using mobile data (4g) loading websites and doing voice & | video calls like FB messenger there are interruptions like for a second there is no sound or video freezes. It does not happen on wifi or other phones.
I tried resetting APN, selecting proffered network to LTE, rebooting, switching SIM slot, resetting wifi, mobile and bluetooth settings. Updated both phones to MIUI Global 12.5.1 still no luck.
Country Lithuania (EU) carrier TELE2
We really like the phones, but this is pretty annoying as we do a lot of video calls due to quarantine and what not.
Amazon suggested to replace the phone but seeing as two of them having the same issue it will most likely will not help.
Anyone experienced these issues and came up with solution?
From what u described, seems to me is a bandwidth/mobile data speed problem. Looks like is not enough bandwidth for video call to work properly. So, what is ur bandwidth provided by ISP? What mobile data plan had from ur telephony provider? Maybe ur mobile data signal is low in the place where u make the call from. It can be so many reasons for the issue u confront with, other than a problem with phone itself (a hardware/software issue).
you can also try the latest china stable firmware 12.5.4
Alin45 said:
From what u described, seems to me is a bandwidth/mobile data speed problem. Looks like is not enough bandwidth for video call to work properly. So, what is ur bandwidth provided by ISP? What mobile data plan had from ur telephony provider? Maybe ur mobile data signal is low in the place where u make the call from. It can be so many reasons for the issue u confront with, other than a problem with phone itself (a hardware/software issue).
Click to expand...
Click to collapse
Hi, ty for reply. That should not be an issue, reception is great and we tried it in multiple locations. Our previous devices Iphone 6s/ Poco F1 worked flawlesly with the same carier.
Here is speed test done on mobile data.
Any other ideas?
Found this thread here and I found a solution. Apparently there's an issue with network interruptions in general, especially on phone calls. This can be avoided by switching on VoLTE and WiFi-Calling. This is what I found out over time.
Here's the fun part though: Through a little bit of research this turned out to be a vodafone-problem. I am just guessing you guys will be either also on vodafone or on the corresponding bandwidth in your country.
It seems to be a bug in the F3, but also something that happens when VoLTE is not activated for your SIM card. The phone will try to use VoLTE and this connection will fail, forcing the connection to reset. It will be back in 10-20 seconds, but this is of course super annoying whenever a stable connection is needed (like phone calls...)
Enter *#*#86583#*#* (86583 = VOLTE on dialpad) on your phone. and it will give you a feedback that the carrier check has been disabled. Note that this doesn't mean that VoLTE has been disabled. Checking the network for the capability is disabled then, which makes the setting visible on the SIM card settings. Same works for VoWifi btw.
Try playing around with those settings and see if the connection drops persist. I have no logical explanation why this is happening because what I am telling you is obviously call-related - and I do realize that what you're describing is about the data connection. For me this was related however and solved my issue.
Possible solutions:
a) try to get your service provider to switch on VoLTE for you (this worked for me). You're going to need to call support for that. They will reset your SIM card in the process. Reboot your phone and be done with it.
b) If a) is not possible, deactivate VoLTE in the menu that you activated with the code above. If you're lucky, this will stop the phone from trying to get this type of connection working, even though it's not available. This is broken exception-handling on the phone's side and Xiaomi promised to fix it. They are aware of the bug (since Aug 20th btw) and promised to push a fix into the next MIUI release
c) play with the settings and try to get the phone to not use alternative protocols, just 3G and 4G, also deactivate Wifi-Calling.
Hope this information will help somebody. If all goes well, Xiaomi will fix it and this will behavior will be gone in the next release.
same issue for me with 12.5.7
data interruptions all the time and full signal loss
very disappointed with this device from the day i got it.
O thought I'm the only one facing this problem.
It's so annoying to get an interrupted connection in the middle of the game.
not only game, and calls, i have too much trouble to get throught a call.
Hello all,
i was also affected by a similar issue.
In my case the symptoms were:
On mobile data/5G some apps would be accessing the internet but others wont..
I was able to overcome this by resetting the access point settings and then applying the ones found here:
Cytamobile-Vodafone Cyprus APN Settings for Xiaomi Poco F3 GT - APN Settings
apn.how
I hope it helps...
My fix for this occasional issue is to set the phone to '3g' only in network settings, then flick it back to '5g'. It seems to be area specific for me. Very bizarre.
ntemis021 said:
not only game, and calls, i have too much trouble to get throught a call.
Click to expand...
Click to collapse
I have the same problem, it helps to have the settings volte and vowifi enabled. Sometimes it looks low cell signal and loosing the connection.
Has anyone return for service the device?
It looks like we still have this problem, my F3 modem is crashing every few hours especially when it switches bands, very annoying.
Magister54 said:
It looks like we still have this problem, my F3 modem is crashing every few hours especially when it switches bands, very annoying.
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It really is! We need a bug bounty for this
Hey I ran into the same problem in Hungary Vodafone Poco F3, 14.07 MIUI
4g net is working flawlessly but
Network connection is lost when start dialing
Nobody can reach me on phone
Enter *#*#86583#*#* (86583 = VOLTE on dialpad)
VoLTE select option turn on/off
Enter *#*#869434#*#*
VoWiFi select option turn on/off
I tried to switch on/off both but no solution just yet
sby has answer for this?
Where should I post this problem to be solved?
I also have this problem and I am from Iran. My mobile ROM is the global version. It seems that this problem is caused by the Poco F3 mobile hardware itself. If anyone finds a solution, please let me know, thanks.

Question WiFi problems - Do others see them too?

Hello Folks,
In summary, the WiFi stack on OnePlus 11 is quite unstable compared to other smartphones (that are also based on Qualcomm SoC with built-in modems).
First off, I've two 802.11 AC (WiFi 5) routers. Compared to my Asus (ROG 5) and Motorola (Moto G 5G Plus) phones, I've noticed that my new OnePlus has better reception for both mobile and WiFi networks. E.g., at the same location where ASUS has say -30db signal, OnePlus 11 shows -27 or -28db. So performance wise, it's fantastic, however, stability of WiFi connectivity is subpar. Between performance and stability, obviously I always prefer stability. I've up-to-date OnePlus 11 CPH2449 device (CPH2449_11_A.08).
I've been using the phone for about 5 days & these are the three distinctive WiFi problems with OnePlus 11 that I've observed in that duration:
1. WiFi dieing silently:
I've seen many times that all of a sudden the WiFi symbol will disappear. Then checking the status of the connectivity will show that it had silently dropped/died. Sometimes, it'll reconnect on its own within 10 odd seconds. When it doesn't, then toggling WiFi off and then on may help. When even that doesn't help, then toggling airplane mode on and then off becomes necessary/only-way to re-establish the connection. During these episodes, the phone is barely 2 metres away from the routers with a clear/unobstructed line of sight with them. Needless to say, neither ASUS nor Moto exhibit this problem while these episodes are playing out with OnePlus 11.
2. VoWiFi dieing silently:
While operating the phone (non-phone-call situations), a number of times I've seen that the VoWiFi logo would drop and VoLTE logo would appear. Interestingly enough, within a matter of 10+ odd seconds, it'd re-establish the VoWiFi connectivity on its own.
3. WiFi not roaming efficiently:
When moving faraway from one router and close to another, it doesn't roam to the closest one, instead holding onto the furthest one. But putting the phone down for say a minute with the screen off, triggers the roaming to the closest router! WiFi assistant neither helps nor hinders this behaviour.
In short, it'd seem the whole WiFi stack is riddled with stability issues. I've done "Reset Network settings", which didn't help with those issues.
Am I the only one facing these issues?
Thanks for any help/guidance.
Wifi Issue
Anyone have wifi dropping off and reconnecting after flashing to oxygen os? I seem to keep experiencing this. Anyone have any fix?
forum.xda-developers.com
No issues with Wifi.
Just downloaded over 130GB over Wifi and ftp server on the phone without a single interruption. Took over 3 hours and no problem.
I have similar issues. My wifi will randomly drop out and then pick up again in that time sometimes it will say internet offline. I've been noticing it the last week or so when that happens.
I've escalated my problems to OnePlus support. After a number of discussions, I think we got the winner: Disabling ipv6 in my WiFi network seems to stabilise it!
I've been trying this only for the past few hours, but it's proving positive so far. Still I'd prefer to test this over at least a day or two.
I've had WiFi just stop working finds no networks. Even turning the toggle off and back on again doesn't work. But after a reboot works fine again. Mines a euro model on fw09
sutt359 said:
I've had WiFi just stop working finds no networks. Even turning the toggle off and back on again doesn't work. But after a reboot works fine again. Mines a euro model on fw09
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I've seen similar behaviour. Turning flight mode on and then off helped me on those circumstances. Mine too EU version CPH2449.
Now, if the root cause is identified and addressed, then it ought not to even regularly disconnect from WiFi in the first place, so subsequent problems like reconnection issues can be avoided then.
Disabling ipv6 has proven to be a good workaround for vastly improving my phone's WiFi stability. Of course, they need to identify and resolve the problem that's making WiFi & ipv6 incompatible though.

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