Develop Bugs

Losing WiFi Connection Intermittently

Here's the deal: my S2 keeps disabling its WiFi connection. I’ll be connected to my router for a while, sometimes for 12+ hours at time, when all the sudden my S2 will lose its WiFi connection and switch to 4G. When I go into my WiFi settings, it will say that my router is “Not in range” and show no other available networks (even though there are dozens in this area).
I can sometimes get my connection back by toggling Airplane mode or “use packet data” on/off. But nothing works %100 percent of the time. I don’t think it’s a router issue either because we had 4 smartphones in this house over Christmas and the only two that lost their WiFi connection were my and my wife’s S2s.
Anyone else encounter this?
(p.s. Phone is stock, by the way.)

If you have the Tmobile my account disable or uninstall it.I made a thread about this awhile back. It has something where it needs to stay connected to 4g or intermittently puts data on and cuts wifi off I used to have this problem before not no more after uninstalling it.

Thanks, sarni. I read your thread a couple days ago (when I was trying to figure out what was going on), but I'm not sure we're having the same issue. My WiFi and 4G icons aren't on at the same time, for instance.
The other problem is that I haven't rooted my phone, so uninstalling T-Mobile's "My Account" app isn't an option.
Yet.

Happening again now.
Phone seems to be stuck in the following loop: scanning for available WiFi networks, seeing them all, locking in on my WiFi network, trying to obtain an IP address, then back to scanning again without a connection.
No toggling of settings broke the loop until I powered on/off.

Galaxy Note 2 constantly loses wifi?

I never had problems with my Galaxy note 2 when it came to wifi until I stayed over my mother's house.
My Galaxy Note 2 constantly kept disconnecting, and reconnecting to her router.
I clicked forget network to monitor the signal strength. There was full bars and the signal never got lost.
So I did what a normal user would do. GOOGLE. And I saw A LOT of people experiencing this issue.
Yet there was no solution to the problem! Everyone is hoping to see an update and blah blah.
So I decided to try to figure the problem out myself.
I thought about it. What's different between my mom's optimum wifi vs my Verizon FiOS wifi.
My router has one network name.. Wait my mom has two? Hmmm...
DX20PR.. *disconnects*......... DX20PR 5G *connects*
WALAH! No more disconnecting and reconnecting.
Moral of the Story: If your Galaxy constantly loses wifi signal, check if your router has a '5G' signal, connect to that instead.
Why this works? idfk. But it solved my problem, and hopefully this will solve someone else's problem :good:

If you have AT&T Smart Wifi installed on your phone then that's been known to cause problems also. I had constant wifi connect/disconnect problems until I uninstalled it.

wifi issues set router to use one channel only
I had disconnects a lot as well until I changed my router setting to use only one channel.

I've seen this problem on multiple phones that I've had. A quick restart on the router always fixes it. Lead me to believe it's the router
Sent from my GT-N7105 using xda app-developers app

Make sure you mom's router isn't set to lower then 50 DHCP Address: EX. 192.168.0.50
Sign into the router usually 192.16.0.1 or 192.168.1.1 from web browser. Go to DHCP Setting and make sure you see 192.168.0.XX (XX being the amount of device that can obtain a ip address to get access to internet). If it lower then 20 change to 50 or little higher.
Hope this helps

If my WIFI security is using WPA2 my GN2 will lose internet connectivity after some time of the screen being off. The only way to get it back is by turning off WIFI on my GN2 and turning it back on. I don't have this problem using WEP security in the router. However, using WEP security is less secure and severely limits WIFI speeds (can't use N speeds).
[Updated on 01/29/13]
I just want to provide a follow-up to this. I recently learned about the ARP table in my router which is responsible for mapping the IP address to its MAC address. If my GN2 doesn't access the internet for a certain period of time its IP address is removed from the ARP table and I have to toggle the WIFI on my phone to gain internet access again. I found that manually adding the IP/MAC address of my GN2 to the ARP table solved this problem. In a 24-hour period I've lost internet access 1 time after about 7 hours of inactivity (I was sleeping) and I gained internet access after a few minutes without having to toggle WIFI. I'm only sharing my own personal experience with this issue in the hopes it will help others. Below is the command I used to manually add a static entry into the ARP table of my router (model: Buffalo WZR-HP-G300N, firmware: DD-WRT):
arp -i br0 -s 192.168.0.101 38:AA:3C:85:1F:7C

I have WAP 2 and I don't lose internet connection. Yes I have a small delay when the SN2 wakes up but it connects right away. Go to your wifi setting and hit forget this network and re enter your pass key and see if this might help. You might have another device using the same ip address.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

Jrockttu said:
If you have AT&T Smart Wifi installed on your phone then that's been known to cause problems also. I had constant wifi connect/disconnect problems until I uninstalled it.
Click to expand...
Click to collapse
This did the trick for my father-in-law who was in town with is AT&T Galaxy Note II. His wifi kept turning off/on and disconnecting from my router and I couldn't save the network connection. My router is setup with an N network and a B/G network both with WPA2 , and he couldn't connect to either without the issue (everything other wifi device had no problems). I didn't uninstall the "AT&T Smart Wifi" just went into Manage Applications, stopped the services/application it was running and disabled the application. Immediately the phone was able to connect and keep connection with no problems. I didn't need to restart the router or do anything else.

Jrockttu said:
If you have AT&T Smart Wifi installed on your phone then that's been known to cause problems also. I had constant wifi connect/disconnect problems until I uninstalled it.
Click to expand...
Click to collapse
Was starting to have a panic attack at work as it would not connect at all to my WPA2 network and i just bought this phone of craigslist. Your advice of removing that crappy program fixed everything! Thank you!

[Q] WiFi Problem

Out of the blue, my WiFi stopped working. I know occasionally this happens and is usually fixed by simply turning WiFi off then on again our by unplugging the router for about ten seconds, but neither of these methods is working this time. This is different, I'm stumped. (By the way I have the SM-P600)
So, the error message I'm getting is, "failed to obtain IP address", then if I click, "RETRY" I get an error message that says, "Network disabled because internet connection is too slow." Which doesn't make sense because all my other devices on my WiFi network have no problems connecting and have no speed issues.
Really, really frustrating. Any help would really be appreciated! Thanks!

The same problems occurs frequently with my tab P-601.
But I have to restart the tab and it works fine. I have to use mobile data for internet connection instead of wifi.
I appreciate any help.

Anybody else have this happen?

I haven't had this problem on my P600, but have had something like it happen on other devices. I think the issue is that Android will remember and avoid WiFi APs with a poor signal. When I am on the fringe of my home WiFi the signal is weak and my network gets blacklisted. To clear the blacklisting I have to force the device to forget the network, the connect again as a new network.

Couldn't detect WIFI
I updated the Android 4.4.2 and since then my tablet couldn't find my WIFI.
My phone and my computer found the network normally but my tablet just showed some of my neihbors' networks. I tried to restart the tablet and reset the router but didn't help.
Now I tried changing he router's settings through my computer and set the frequency to a higher value and now my tablet finds and connects to the WIFI normally!

WiFi keeps disconnecting and reconnecting.

Title explains most of my issue but whenever I want to do anything on my phone the WiFi always keeps randomly disconnecting and reconnecting on my G4, when i go to my WiFi settings while its disconnected it just says the network is saved and then when i connect to it, it instantly disconnects. If anybody has any solutions its would be gladly appreciated.

I have the same issue. One additional info I have is if I look at wifi immediately when it disconnects, it shows something like "Avoided poor internet connection....." even though signal strength is Excellent. It feels as though LG reduced the threshold of developer options' "Aggressive Wi-Fi to Cellular handover". I have that option OFF.

I recently got a replacement Verizon G4 Hardware rev1 because of the constant horrible Qi Charging meltdowns. My new G4 seems to have a faulty Wifi module or something because my wifi will suddenly just stop working (even though still connected). I also get weird toast messages that is is disconnected/connected, when I am sitting a few feet away from my router.
My router is a newer AC router. The wifi analysis shows me on a good channel. None of my other devices (or previous G4s) have an issue.
I have 2.4 and 5ghz enabled so perhaps it is disconnecting and reconnecting to change bands. I haven't gave it much thought because honestlt I do this crap for work and been lazy. I think there is an option to use 2.4ghz only. That may prevent it bouncing occasionally.

I get the same thing. Very annoying
Sent from my Nexus 7 using Tapatalk

I just noticed this thread. My WiFi seems to get into a state where it does this too. What I've found is
1) it only does it when connected to 2.4Ghz WiFi. If I use my router's 5Ghz network it stays connected. Unfortunately the range of 5Ghz is not good enough for me to use this all the time.
2) it only happens when Bluetooth is enabled. If I disable Bluetooth then my WiFi stays connected. This is annoying to have to do and more of a workaround than a fix.
3) WiFi works perfectly in Safe Mode
I'd be interested to hear if this is the same for others who have this issue too.
Like I said, my phone seems to go through phases when this occurs, then (seemingly randomly) it fixes itself and works for a few days/weeks, but then it happens again. The state change seems to be triggered by installing/uninstalling apps but I can't make this happen at will.

Same issue here, very annoying. All other devices stay connected to WiFi just fine but this LG G4 keeps disconnecting and reconnecting. I have an Asus AC router. The phone is connected to the 2.4 Ghz band. Not sure what to do...the phone just got an update (marshmallow)...the router is updated and working fine with all other devices.

Me too. Even when signal is great. This is terrible.

I know this is a pretty old thread, but I was just having the same issue on my g6. I found that it was because I disabled some of what I thought was just bloatware. By enabling both the LG "SmartWorld" app and the at&t " Smart Limits" app I was able to get my wifi working properly again.
I am not sure which one was the culprit, but I hope this helps anyone else digging back for a solution.

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
Click to expand...
Click to collapse
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.