[Q] Stuck in "CDMA only" mode - Sprint Samsung Galaxy S III

Earlier today my phone was connected to Sprint's LTE network but no data seemed to be flowing to and from my phone. I really needed my work email to update so I used the Phone Info app to force my phone to jump on the 3G network, which worked just fine and my mail quickly updated. Now I'm trying to turn my phone back to "LTE/CDMA/EvDo" mode but the phone won't switch. Every time I switch from "CDMA only" to "LTE/CDMA/EvDo" then leave the "Device information" screen the phone reverts back to "CDMA only". Has anyone run into this problem and if so, how were you able to fix it?

nubby1082 said:
Earlier today my phone was connected to Sprint's LTE network but no data seemed to be flowing to and from my phone. I really needed my work email to update so I used the Phone Info app to force my phone to jump on the 3G network, which worked just fine and my mail quickly updated. Now I'm trying to turn my phone back to "LTE/CDMA/EvDo" mode but the phone won't switch. Every time I switch from "CDMA only" to "LTE/CDMA/EvDo" then leave the "Device information" screen the phone reverts back to "CDMA only". Has anyone run into this problem and if so, how were you able to fix it?
Click to expand...
Click to collapse
What about going into settings > more settings > mobile networks > network mode and changing it there. (you'll have to restart)
I've found those toggle apps aren't always reliable.

jdelano said:
What about going into settings > more settings > mobile networks > network mode and changing it there. (you'll have to restart)
I've found those toggle apps aren't always reliable.
Click to expand...
Click to collapse
Well now I feel dumb because that had totally slipped my mind. That worked like a charm. Thanks for the help!

Related

Data connection problem when coming back from Airplan mode...

I've stumbled on a strange issue.
If I switch the Desire to the Airplan mode when the Data connection is off (I use the appropriate HTC Data connection widget to do this), when I switch back to Airplan mode off, the phone is no more able to restore the data connection.
The only workaround found is to restart the phone.
Has anyone got the same experience?
Two questions.
1. When you say you switched off data connection, are you talking about syncing, wifi, mobile network, ... etc?
2. Why do you want to switch off data connection and turn on Airplane Mode? Doesn't Airplane Mode cater for shutting down all wireless?
1. I'm talking only about the "Data connection" option on "Wireless and networks" menu, that is switchable via a special HTC widget. Switching this option off, the phone is no more able to access to the GPRS provider. I often keep this option off to save battery life. I turn Data connection on, if I need to sync and access to Internet.
2. This is not the matter, just it happens. Eg. When I go to sleep, I turn the Airplane mode on, doesn't matter if the Data connection is on or off (it is possible that it is on) in order to avoid any disturbs (calls, sms, etc.).
I just wonder if this issue is a true bug of the phone:
1. Switch off Data connection
2. Switch on Airplane mode
3. Switch off Airlplane mode
4. Try to activate Data connection (for me it seems it's not possible without a reboot)
Had a similar problem which I wrote to HTC about: after the phone has been data connected via wifi and I leave the wifi network it often will not connect to data via mobile network (GPRS/3G), giving the message "connection failed" if I try to manually connect in the "mobile networks" section of the "wireless & networks" settings page.
It seems to have fixed itself now, and I think it's because I've since ticked the option to "enable always-on mobile data", which I had turned off to save battery. Give it a try.
yurikg said:
Had a similar problem which I wrote to HTC about: after the phone has been data connected via wifi and I leave the wifi network it often will not connect to data via mobile network (GPRS/3G), giving the message "connection failed" if I try to manually connect in the "mobile networks" section of the "wireless & networks" settings page.
It seems to have fixed itself now, and I think it's because I've since ticked the option to "enable always-on mobile data", which I had turned off to save battery. Give it a try.
Click to expand...
Click to collapse
Thanks yurikg, but on my phone the "enable always-on mobile data" option is checked, anche there is no mobile network connection problem coming back from a Wifi connection.
The problem I shown is probably caused coming back from Airplane mode.
The other possibility is Juicedefender which apparently is known to cause problems recovering a mobile data connection (recent update may have fixed this):
http://forum.xda-developers.com/showthread.php?t=660706&highlight=juicedefender
yurikg said:
The other possibility is Juicedefender which apparently is known to cause problems recovering a mobile data connection (recent update may have fixed this):
http://forum.xda-developers.com/showthread.php?t=660706&highlight=juicedefender
Click to expand...
Click to collapse
I've not juicedefender on my Desire...
I've in plan to do some other tests...
I have a problem with my Desire reconnecting to a mobile data connection too, but not when I come out of 'plane mode, its when I leave a Wifi covered area. It could be the same problem, triggered by anything that disables and then reactivates the data connection?
I have no solution yet, and I have contacted HTC support about it (still no reply). There is some discussion here:
http://forum.xda-developers.com/showthread.php?t=656192
I seem to be having this problem too when coming off WiFi connection, unfortunately restarting the phone has not righted the issue...
I'm also having this problem with the connections. Fine on the wifi at work and at home but not switching over to the mobile network. Apart from that the phone seems awesome! Soooooo much better and more fun than the HD2.
OK, my phone appears to have no network connection whatsoever in fact...
Have the same problem as well. Coming from Wifi and to mobile network only - I do not get any data coverage. This is for the Desire and I had the same problem with Legend.
I hope this will be worked out ASAP.
Well, my problems all sorted. Turns out I had to manually input the APN for internet, took me by surprise since no phone I've owned since 2006 has needed that...
Just had to put in the settings manually too. Seems there is an issue with some of them. Would put a link here but as i'm a newbie not allowed Just google vodafone apn settings for htc desire and hey presto
Same problem here, my Hero had it too. I found it did work when you switch to gsm only and back to 3g/gsm... Would love to hear good solutions.
Im also having the same problem.
If i try switching my connection from wifi to mobile data, my mobile data connection fails to work. A power cycle fixes the issue but if i try switching connections again, the problem returns.
Can I suggest to anyone still having problems getting their phone to switch to mobile data when leaving Wifi to view the following bug report on Google Code and to star it to help raise the priority with Google:
http://code.google.com/p/android/issues/detail?id=2207&colspec=ID Type Status Owner Summary Stars
Thanks folks

Lost 3g and data connection

I did something inadvertently and lost my 3g and data connections. As far as I can see, the settings are all right "Mobile network" is clicked under Wireless and Networks, the Mobile Icon is green -- but suddenly I lost 3g.
Could someone give me a checklist of things to do?
Desparately...
Joe
Have you maybe deleted your APN's?
menu>settings>wireless and networks>mobile networks>access point names. Also while in thre check network mode is set to gsm/wcdma auto.
the access point I have is Orange Internet -- with juicedefender-orangeinternet underneath. Should there be another one?
Joe
Turn aeroplane mode on and off, if that doesn't work turn off and remove battery. Sounds like you've got an issue that many had and that I use to have.Do a search for the work around, try data connection issues. It was a pain for many data would occasionally just stop working. The new update apparently fixes it.
I would also try things with juicedefender turned off to see if it is causing any problems.
Have you also checked your network mode isn't set to use 2g only?
tried airplane off and on -- no luck. Ditto with battery out and juice defender disabled.
How do I check if Network mode is set to 2G? And how do I get the new upgrade?
(Many thanks for your help, by the way.)
Joe
I've had exactly the same issue.
First thing I did was delete the APN for the faster TMob speeds and reverted to default. This immediately made it work for a few moments before all data connection was lost.
So I then after trying the various things (ie airplane mode - can't remember what else - maybe switching off juice defender?), I did a factory reset. This solved things - until I reinstalled JD, and then the problem rearose. I ahve since binned JD, and I don't have any issue - just a rapidly decreasing battery level...
I just did a hard reset to switch to gmail!
Is there some way to uninstall juice defender?
Also, I just noticed that when I turn my Desire on, I no longer get the choice to choose HTC Sense -- what could have caused that?
Joe
If you performed a hard reset, then this should have deleted Juice Defender and all your pre-installed apps.
To delete it manually, go to Menu > Settings > Applications > Manage Applications and select Juice Defender from the list and choose the Uninstall option.
To check if you network is set to 2G, go to Menu > Settings > Wireless & Networks > Network Mode. If it shows GSM only selected, then it is set as 2G, set it to the GSM/WCDMA instead.
For Sense, go to Settings > Applications > Sense UI then clear defaults and force stop, then hit the home button and choose Home when given the option. You can then set it as default and turn it off or on.
Ta for that. 3g is still on, I've uninstalled Juice Defender and still no joy. (It had gone when I did the reset, but I installed it again. Didn't have any problem with it at first.) Strangely, I can't find Sense UI amongst the applications. Could the hard reset have deleted it?
Anyway, its beginning to look like another hard reset tonight, when I have access to wifi....
Joe
Apologies... it would show up as HTC Sense, not Sense UI
You can also try the HomeSwitcher app, to easily switch between launchers: http://www.androlib.com/android.application.ymst-android-homeswitcher-qEw.aspx
Hello,
i have the exact same trouble.... Lost of all data connexion! Wifi is working properly, but in 3G sometime i lose connexion and i m unable to connect back!
Only way to do it is to turn off the phone and turn it back in, and most of the time it works.
The thing i get since 2 days (since the update in fact) is that before i go to bed i surf a bit, its working, then i plug the phone and go to sleep... then on the morning, no more data connexion!
This is REALLY annoying, and i can't figure out why it is behaving like that.... i have APNdroid installed, but when i lost the connexion even if i try to enable/disable it, nothing to do....
Please help!!
Orange?
Any of you guys on Orange by any chance?
My work mate and I both have a desire and lose 3G when at work. We can call our handsets and they both go straight to vm. They also fail sms.
We can only reliably use the handsets on GSM.
When I go home I switch back to GSM/WCDMA auto and all is OK, except my buddy doesn't live far from work so is on the same cell.
We think it's an issue with an Orange 3G mast that serves our area.
Same thing happens with my N97 and I thought it was handset related.
Data Connection Problem
Hey People,
I have a similar problem with my Galaxy S2 too, on Resurrection remix 4.0.3. I have tried everything well almost everything I know about. I have also installed automatic net services from Orange romania. It didn't help too. I believe there are people who can help fix this problem and releases my pain.
Any helpwould be appreciated.
I had the same problem once. It was the EPST settings.
1. Who is your carrier?
2. What rom do you have? In order to edit the EPST settings you need to
a. Know what your doing
b. Have the ORIGINAL sense rom installed.
You will probably need to call your carrier and tell them your data is not working and you believe it to be the EPST settings. To get into these settings, (in the ORIGINAL sense rom) dail ##778#, click edit mode, then type in password (usually 000000), but it depends on ur carrier.
From there it depends on what your carrier needs the settings to be.
I messed with the APNs settings on my phone for weeks and nothing worked. Then i stumbled upon EPST settings and that fixed it. I had to contact someone in upper data communications in Bluegrass Cellular to get the correct settings. So good luck!
---------- Post added at 04:40 PM ---------- Previous post was at 04:38 PM ----------
beaverHausen said:
Any of you guys on Orange by any chance?
My work mate and I both have a desire and lose 3G when at work. We can call our handsets and they both go straight to vm. They also fail sms.
We can only reliably use the handsets on GSM.
When I go home I switch back to GSM/WCDMA auto and all is OK, except my buddy doesn't live far from work so is on the same cell.
We think it's an issue with an Orange 3G mast that serves our area.
Same thing happens with my N97 and I thought it was handset related.
Click to expand...
Click to collapse
Not all towers support 3G or even internet. That could explain that but idk about the calling and sms.

Problems with Motorola Support

I had a Defy that wouldn't connect to the internet when on wifi as I described in this thread:
http://forum.xda-developers.com/showthread.php?t=1137085
I sent it to Motorola to fix and the first time they didn't even diagnose the correct fault even though I filled it in on their support page. It came back to me with a software upgrade that didn't fix anything.
I sent it back again with a full description of the fault and this time I think they didn't even bother to read the description. They've sent it back to me a second time with the same fault present and the list of tests they did doesn't seem to include anything to do with wifi.
I am afraid that if I send it back a third time they'll just give me the runaround again. What options do I have? The phone is still within Warranty, they owe me a fix or a new phone but how can I force them to honour the warranty?
Cheers.
Bump for great justice.
Read your original post. Have you tried using a different wifi?
Also, try this: turn ON your airplane mode. Then turn ON your wifi. Wait until you get a wifi signal. Then: dialer > *#*#4636#*#* > phone information > tap "run ping test". If you "PASS" your wifi just connected and works.
Thanks but it doesn't really connect to wifi, just stops at getting the ip address. I have tried on a different wifi network. I actually have two in my house as one won't cover the whole house. I also took the phone to my friend's business and tried connecting there with no joy. On the rare occasion it does connect I can't get on the internet.
OK, but have you tried it in airplane mode with wifi on?
If you still cannot connect, leave it with airplane mode on and wifi on. Do the dialer > *#*#4636#*#* > phone information thing and scroll down to "set preferred network type" What does it say? It should say "unknown."
Back out of this, turn airplane mode OFF and wifi ON. Go back into the INFO menu (dialer > *#*#4636#*#* > phone information) and scroll down to "set preferred network type". It should say "GSM only". Does it? If not, what does it say? Also, if it doesn't you can manually change it to "GSM only". Try all that and please tell us what happens in each step.
It happens as you describe. Network type unknown for the first step and GSM auto PRL for the second step.
windywoo said:
It happens as you describe. Network type unknown for the first step and GSM auto PRL for the second step.
Click to expand...
Click to collapse
OK... if you have airplane mode OFF and wifi ON and you see it sats "GSM auto PRL", did you try changing it to "GSM only"? From my experience you cannot get wifi if it says "GSM auto PRL". Trying changing it to "GSM only".
I have the same problem too.I've try your methods but it won't work.
Sent from my MB525 using XDA App
How to add or put DNS?
Sent from my MB526 using XDA App
damienrayne said:
I have the same problem too.I've try your methods but it won't work.
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
Can you be more specific? If you changed "GSM auto PRL" to "GSM only", did it...
a) Refuse to change?
b) Change back after you exited?
c) Stay as GSM only and still not connect to wif?
Basically I want to know if I can demand a replacement handset from Motorola. I've tried all the fixes I can find on these forums and now Motorola have twice failed to fix it. I'd rather not send it to them a third time and have the same result.
scrannel said:
Can you be more specific? If you changed "GSM auto PRL" to "GSM only", did it...
a) Refuse to change?
b) Change back after you exited?
c) Stay as GSM only and still not connect to wif?
Click to expand...
Click to collapse
Mine would be c
Sent from my MB525 using XDA App
damienrayne said:
Mine would be c
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
If it stayed at" GSM only" this suggests your phone is trying to do the right thing. Because in order to switch from "GSM auto PRL" to "GSM only" it needs to actually detect a wifi signal, not just have the wifi activated on the phone. Have you tried changing your router settings?
Have a look at this post from the moto forum: (https://supportforums.motorola.com/message/456261#456261)
"Why does my Defy constantly lose its WIFI connection despite an excellent signal strength?
I experienced roughly the same problems: good WIFI signal but little or no traffic at all.
It seems I have found a solution for my specific case - maybe it works for others as well.
My Setup:
WLAN router: Linksys WRT160N (Firmware Version: v1.53.0)
Moto Defy (MB525, Firmware version: 2.1-update1, System version: Moto_Version.2.34.1.MB525.Retail.en.SEA)
Originally I had the router running in wirless-N mode. After reading that this could be the problem, I changed to wireless-G mode. This seemed to slightly improve the situation, though still the WIFI connection was far from satisfying (medium signal strength, but no response / traffic). With my laptop computer things were fine regardless of the wireless mode.
The WIFI router serves roughly 6 devices.
I then stumbled upon the QoS or WMM (or WME) setting for the router which originally was enabled.
Since I disabled that the connection is fast and stable and i didn't have problems anymore."
I've tried G already but the QoS thing was new. Still no luck ofc.

Any way of disabling only 2G from auto selecting?

When I leave my apartment until I disconnected from WiFi, I getting into the elevator and the data is searching for network and will not find any.after I get out of the elevator, it connects to 2G and stay there for long time.
If I switch WiFi off,, before I get into the elevator, it will connect directly to 4g and stay there(and this is how I like it).
But most of the time I forget switch off the WiFi, so I have to wait something like 10 minutes to get 4g connection.
Any way of disabling 2G, but leave 3G & 4G?
K-a-M-u-Z-u said:
When I leave my apartment until I disconnected from WiFi, I getting into the elevator and the data is searching for network and will not find any.after I get out of the elevator, it connects to 2G and stay there for long time.
If I switch WiFi off,, before I get into the elevator, it will connect directly to 4g and stay there(and this is how I like it).
But most of the time I forget switch off the WiFi, so I have to wait something like 10 minutes to get 4g connection.
Any way of disabling 2G, but leave 3G & 4G?
Click to expand...
Click to collapse
You could try dialing *#*#4636#*#* which will open the 'Testing' settings and then navigate to Phone information and scroll down until you find a little drop down box which you can select which network types you want to run. I myself use CDMA/EvDo/GSM/WCDMA/LTE Auto which switches between those when it needs to but if you only want to use 4G then you can switch to 'LTE only'.
Goodluck and I hope that does what you wanted!
Edit: I just realized that that number may not work on all phones, if that fails and you cannot access it with that then the only other method I can think of is to download Pimp My Rom from the Play Store and once installed open it and navigate to Tools < Scroll to the bottom & tap Device Hidden Menu > Access Hidden Menu. Please if you decide to wander around in this app then make a Nandroid backup first as this app is still in beta and very unstable, I recommend just using it for the device hidden menu options until you get what you need done.
S1L3nTShaDoWz said:
You could try dialing *#*#4636#*#* which will open the 'Testing' settings and then navigate to Phone information and scroll down until you find a little drop down box which you can select which network types you want to run. I myself use CDMA/EvDo/GSM/WCDMA/LTE Auto which switches between those when it needs to but if you only want to use 4G then you can switch to 'LTE only'.
Goodluck and I hope that does what you wanted!
Edit: I just realized that that number may not work on all phones, if that fails and you cannot access it with that then the only other method I can think of is to download Pimp My Rom from the Play Store and once installed open it and navigate to Tools < Scroll to the bottom & tap Device Hidden Menu > Access Hidden Menu. Please if you decide to wander around in this app then make a Nandroid backup first as this app is still in beta and very unstable, I recommend just using it for the device hidden menu options until you get what you need done.
Click to expand...
Click to collapse
I remember on my One X , this trick was working but after a reboot it was resetting to its previous state. No idea if this is still the case with M8
stathis95194 said:
I remember on my One X , this trick was working but after a reboot it was resetting to its previous state. No idea if this is still the case with M8
Click to expand...
Click to collapse
I had problems once with my phone only using 3G and using this to set it to allow 4G solved my problem permanently, hopefully it won't "reset" with yours, though I've never heard of that issue happening so it may be uncommon.
S1L3nTShaDoWz said:
You could try dialing *#*#4636#*#* which will open the 'Testing' settings and then navigate to Phone information and scroll down until you find a little drop down box which you can select which network types you want to run. I myself use CDMA/EvDo/GSM/WCDMA/LTE Auto which switches between those when it needs to but if you only want to use 4G then you can switch to 'LTE only'.
Goodluck and I hope that does what you wanted!
Click to expand...
Click to collapse
I remember on my One X , this trick was working but after a reboot it was resetting to its previous state. No idea if this is still the case with M8
Click to expand...
Click to collapse
That what i was looking for.
i have selected WCDMA & LTE(3g+4g) BUT... when i reboot...it goes back to GSM/WCDMA/LTE...

Note 5 Wi-fi Rapidly Switching On And Off

Firmware: 6.0.1
Model: SM-N920A
UPDATE: Problem solved. Turns out it's an issue with the WIFI scanning in LOCATION, not in the wifi settings. While I still think this is an issue with the firmware, at least there's a way to get it to stop freaking out until they get it fixed.
Whenever I turn on the Wifi, it will often begin a cycle of rapidly turning off and back on again. If you watch the switch that indicates 'on' and 'off', it's constantly fluctuating between the two. -Immediately- after the switch shows it's turned on, the text just below the switch says "turning off.." and it turns off, immediately afterward turning back on, and the process repeats constantly until the phone dies.
Something is either forcing it to turn off, or forcing it to turn on. I've tried adjusting the settings for my third-party texting app (Textra), and even after disabling the entire app and using the stock one, the issue persisted.
I've tried restarting, I've tried clearing the cache via the bootloader.
I've exhausted the entire suite of options in settings for anything Wifi related, no configuration of settings has resolved the issue, including turning off wifi scanning.
I've tried entering the combination of "#", "*", and 0's and 1's (can't remember it off the top of my head) to access the wifi settings to turn off the power saving, but my phone under the listed model and firmware showed no such option.
The problem persists in any location, so I know it's not anything to do with the network I'm trying to connect to.
The only way I've gotten it to stop is going to the wifi settings menu, and rapidly tapping the switch while it constantly goes back and forth. I've managed to get it to stay in the "on" position, but that's the closest thing to a fix I've been able to find.
I've combed through many threads in the AT&T Note 5 troubleshooting topic, and can hardly find anything that describes this particular issue, only with wifi "not staying connected" or other obscure descriptions that upon further inspection were -not- the issue I'm having here.
Were it up to me I would root the thing and put stock Nougat on there and be done with it. But alas, AT&T has removed that option.
I am willing to do a factory reset, but I'd like to know if anyone else has had this issue and if there is any other way to solve it, so I can avoid it in the future.
Settings > wifi > more (top right corner) > advanced > always allow scanning - set to 'off'
Like I said, I've exhausted all possible options in the menus relating to wifi.
This is what I see when I go into the "Advanced" settings in Wifi.
Network Notification (on or off)
Hotspot 2.0 (on or off)
Keep wifi on during sleep (never)
Auto connect to AT&T wifi (on or off)
Install network certificates
MAC address
IP address
That's all there is. I just factory reset my phone, restored it, and the problem in the OP persists.
I rebooted it in safe mode, and the problem still persists. At this point, it looks like it's an issue with the individual handset, unless there's anything I've missed. This is beyond frustrating.
Sorry but can you explain to me how you stop this from happening?
Mine going crazy from time to time, drives me nuts, and i can't stop it.
Btw this doesn't exist on my AT&T Note 5 --> Settings > wifi > more (top right corner) > advanced > always allow scanning - set to 'off'
Kill AT&T Wifi Direct and AT&T Hot Spots.. Remove them as System Apps also.. You should get a message that it is replacing it with the stock version somewhere along this path then your wifi will work flawlessly again even with 5GHz, go figure I guess Google does a better job at WiFi.'
Edit: (sloppy instructions)
DEVICE|APPLICATION MANAGER
"MORE" top right corner
CHANGE SYSTEM SETTINGS
<disable AT&T smart WiFi and anything else that is AT&T or Samsung, including theme nonsense if you want)
Now remove it from Apps....
DEVICE|APPLICATION MANAGER
Force Stop AT&T Smart Wifi. Disable AT&T Smart WiFI.. (Select Storage in same screeen, restrict background data.. Remove permissions)
I realize some of my steps are redundant but AT&T will update stuff then turn those apps back on somehow.. But not if you gut it like I described above
droidvoider said:
Kill AT&T Wifi Direct and AT&T Hot Spots.. Remove them as System Apps also.. You should get a message that it is replacing it with the stock version somewhere along this path then your wifi will work flawlessly again even with 5GHz, go figure I guess Google does a better job at WiFi.'
Edit: (sloppy instructions)
DEVICE|APPLICATION MANAGER
"MORE" top right corner
CHANGE SYSTEM SETTINGS
<disable AT&T smart WiFi and anything else that is AT&T or Samsung, including theme nonsense if you want)
Now remove it from Apps....
DEVICE|APPLICATION MANAGER
Force Stop AT&T Smart Wifi. Disable AT&T Smart WiFI.. (Select Storage in same screeen, restrict background data.. Remove permissions)
I realize some of my steps are redundant but AT&T will update stuff then turn those apps back on somehow.. But not if you gut it like I described above
Click to expand...
Click to collapse
Thank You!
Much easier to understand and follow..
Appreciate it.

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