[Q] 4.2.1 Won't connect to 4G (tmobile) while home - Samsung Galaxy Nexus

Some brief history:
Rooted on stock ROM from factory everything working fine.
I was prompted for 4.2.1 OTA update, I accepted phone restarted with no errors.
I cannot get 3G or 4G around my house the signal is full and and i see the little up/down arrow as if some activity is happening.
Any app that requires data Facebook/Netflix/Speedtest tells me network is unavailable. I can still make and receive call and txt
Data does work once I leave my area and phone connects to a different tower I imagine.
I have spoken to tmobile support and a ticket was placed to check the status of the tower and they are reporting "no outage" .
Things I have tried for troubleshooting so far:
1. reset and re-enter apn details
2. tested my sim card in a CM7 rooted HTC Nexus same issue
3. Tried my sim in a stock tmobile blackberry curve , data worked (3G limited device)
4. My phone gets data when i force 2G network only
I would hate to flashback as I have everything setup perfectly and even my tether is working but any help is appreciated.

Try using a different radio
Sent from my Galaxy Nexus using xda app-developers app

Wouldnt the 4.2.1 OTA push out a new radio if needed? I'm not using a custom ROM all stock since day1 except for root w/gnex toolkit. Also the phone gets great 4G speeds when not in that problem area (that happens to be my house)

OP, have you found out what your problem was as I'm having the same problem with my phone
Sent from my Galaxy Nexus using xda premium

Update went to t mobile replaced my Sim now have data
Sent from my Galaxy Nexus using xda premium

Related

[Q] all of a sudden phone will not find any carriers?

Been running Darkside rom for several weeks now without any issues. Just picked my phone up to check it and it says no service and "searching" but never gets signal. I took the sim out and used it in my other phone without any issues. I have the replacement warranty if I need to swap it but is there anything I could try before I do that and return it to stock? WifI calling does work but with Wifi off, no cellular service. Thanks.
Try wiping data and cache in recovery
Sent from my SAMSUNG-SGH-T989 using xda premium
Check your apn settings
Sent from the iPhone graveyard.
I had this with my old iPhone. It usually happens when its baseband crashes. For some reason jailbreaking always did that to it.
Just reboot your phone. If it happens very often you might have a bad flash.
It is working again. I think the 4G must have been out in the area because if I selected GSM only it would get edge. Thanks for the replies.

Data Connection issues

Hi I'm on vanilla android version 4.1.1 and not rooted. Since the 16th of this month, I've been having issues with data connection on my GNexus on the Three UK network. I noticed the 3G and H icons on my device keeps switching back and forth continuously and when this happens, access to the internet stalls. Can't seem to use apps or access web contents. For example, the Flipboard app is having difficulty updating my contents when the 3G and H issue starts. I've been in touch with the network to find out if it's from their end but was told no problem with network connection.
Is there a problem with my 3g radio?
Sent from my Galaxy Nexus using xda app-developers app

serious issue! data loss

first i got to send my apologies to kootz (sp?) because i thought it was only doing it on their rom when i just happened to be i was on their rom the couple times it has happened. i thought cm10 didnt do it because immediately i would flash that and data was back. it happened today while running cm10. suddenly i have no data connection i can talk and text but no data. even after reboot no data no i can connect to wifi. what i did this time was go to titanium back up i erased the data for "input devices 4.1.1 blh blah blah" and data kicked back on.......anyone else having this issue???? i don't know if it's doing it on the stock rom as i have not been on it for quite some time.......anyone else??
even when i toggle data off and on it still stays off but the phone acts like data is off only thing that can be done is talk and text.
You can actually confirm that you have mobile network connectivity period?
As in, you're sure you can talk?
When I lose data from LTE -> 4G/HSPA+ ... then I lose everything. It looks like I can call, I have full bars, albeit no logo, but I can't actually place a call. I get the 'Emergency Calls Only' message, OR 'No Network Found' depending on Rom.
Either way, no solution....yet.
Also, I'm on Bell Network, currently running Ariel 2.08 Stock. (ATT-based I believe).
Sent from my Transformer Prime TF201 using XDA Premium HD app
reallybigabe said:
You can actually confirm that you have mobile network connectivity period?
As in, you're sure you can talk?
When I lose data from LTE -> 4G/HSPA+ ... then I lose everything. It looks like I can call, I have full bars, albeit no logo, but I can't actually place a call. I get the 'Emergency Calls Only' message, OR 'No Network Found' depending on Rom.
Either way, no solution....yet.
Also, I'm on Bell Network, currently running Ariel 2.08 Stock. (ATT-based I believe).
Sent from my Transformer Prime TF201 using XDA Premium HD app
Click to expand...
Click to collapse
I have the exact same issue with my Telus SGS3. Even when running on stock ICS, even before rooting, I had the issue as mentioned above. I sent it out for repairs under warranty and Samsung claimed it not to have any faults and they just reflashed and sent it back claiming it passed all tests. I asked Telus to send it back again because it came back with it stuck on the Samsung logo. There has to be a solution to this or Samsung should at least fix it.
reallybigabe said:
You can actually confirm that you have mobile network connectivity period?
As in, you're sure you can talk?
When I lose data from LTE -> 4G/HSPA+ ... then I lose everything. It looks like I can call, I have full bars, albeit no logo, but I can't actually place a call. I get the 'Emergency Calls Only' message, OR 'No Network Found' depending on Rom.
Either way, no solution....yet.
Also, I'm on Bell Network, currently running Ariel 2.08 Stock. (ATT-based I believe).
Sent from my Transformer Prime TF201 using XDA Premium HD app
Click to expand...
Click to collapse
I still can talk and text. I have talked and text. Once I wipe data of that file data kicks back on......
Beside the bars there us nothing there. I have made calls and got texts but I have no data. I have tried putting into airplane mode and off and I have tried toggling mobile data......
Sent from my SAMSUNG-SGH-I747 using xda premium
I'm guessing no one has this issue but me. Probably need to return mine
Sent from my SAMSUNG-SGH-I747 using xda premium

Fixed service dropping and locked LTE

I finally got LTE locked on with Telus other users confirmed Rogers, AT&T and Bell(thanks) . No service disconnections, even while on wifi.
The problem I see is conflicting settings while flashing roms/modems. This seems to be the only fix. I'm pretty stoked I figured this out because I was about to switch back to my s2x out of frustration.
This took a lot of trial and error, literally had nothing to go on and no where in particular to start. Enjoy.
MAKE SURE YOU ENABLE LTE TOGGLE IN ROM AND HAVE IT ON BEFORE STARTING.
1. Network mode(settings/wireless & networks, more/ mobile networks/ network mode) set to gsm/lte/wcdma
2.Phone setting in test mode *#*#4636#*#* set to lte/gsm
at&t / rogers should select gsm/lte/cdma in test mode
3.Recovery flash latest modem mumLL1
(at&t users flash ucdlk3)
Wipe cache/dalvik
4 . Reset. Give it a couple mins to ask the network for lte.
If you disable Lte(through toggle) and want to use 3g/H+ for battery saving, the only way I've been able to reconnect to it; is to re enable(toggle) and reset, wait a couple mins to connect.
Side note: depending on your 4g service area, it may bounce around 3g/H+ which is normal.
When you place a call it will drop to 3g (the believed reason for this is that the phone knows you won't need heavy data so falls back to ease up on the battery during calls) but will reconnect a couple mins later. Our phones are slow to negotiate Lte connections with the radio testing sockets and network stability before committing, so be patient.
Let me know if this works for you and which network. Thanks.
Modems can be found here
http://forum.xda-developers.com/showthread.php?p=34397816
Re: Fixed service droping and locked LTE
To check if it worked. Go into test mode and it should say Lte in network type.
Xda I747
So does this mean we get no 3g?
Sent from my Mind using Telekinesis!
Yes everything works. I can unselect lte in my toggles and it drops to 3g/hspa. When I re-enabled lte I noticed that I have to make sure in network settings lte/gsm/wdcma is selected and reset phone.
Xda I747
O wow lucky u I can't unselect on Att lol
Sent from my Mind using Telekinesis!
Which rom are you on? Should be up in your toggles. Basically it changes you network settings from cdma/gsm to lte/gsm/cdma. But it conflicts sometimes.
Xda I747
Its there it just doesn't do anything because all the modems on the Att S3 are Rill locked or something so we don't have the option to do it so easily
Sent from my Mind using Telekinesis!
dark_intel you are the man, i finally have 4G
btw works on at&t
countrylife said:
btw works on at&t
Click to expand...
Click to collapse
Just make sure you help spread this thread like a bad STD, this is a huge problem affecting many!
Worked for me on Bell Mobility.
Edit: Running CM10.1 (latest nightly)
No Test Mode using CM10.1 ROM
dark_intel said:
I finally got LTE locked on with Telus other users confirmed Rogers, AT&T and Bell(thanks) . No service disconnections, even while on wifi.
The problem I see is conflicting settings while flashing roms/modems. This seems to be the only fix. I'm pretty stoked I figured this out because I was about to switch back to my s2x out of frustration.
This took a lot of trial and error, literally had nothing to go on and no where in particular to start. Enjoy.
MAKE SURE YOU ENABLE LTE TOGGLE IN ROM AND HAVE IT ON BEFORE STARTING.
1. Network mode(settings/wireless & networks, more/ mobile networks/ network mode) set to gsm/lte/wcdma
2.Phone setting in test mode *#*#4636#*#* set to lte/gsm
at&t / rogers should select gsm/lte/cdma in test mode
3.Recovery flash latest modem mumLL1
(at&t users flash ucdlk3)
Wipe cache/dalvik
4 . Reset. Give it a couple mins to ask the network for lte.
If you disable Lte(through toggle) and want to use 3g/H+ for battery saving, the only way I've been able to reconnect to it; is to re enable(toggle) and reset, wait a couple mins to connect.
Side note: depending on your 4g service area, it may bounce around 3g/H+ which is normal.
When you place a call it will drop to 3g (the believed reason for this is that the phone knows you won't need heavy data so falls back to ease up on the battery during calls) but will reconnect a couple mins later. Our phones are slow to negotiate Lte connections with the radio testing sockets and network stability before committing, so be patient.
Let me know if this works for you and which network. Thanks.
Modems can be found here
http://forum.xda-developers.com/showthread.php?p=34397816
Click to expand...
Click to collapse
Ok sounds promising but unable to get my ATT phone running ROM cyanogenmod10.1 03/04 nightly into Test Mode using the keypad code provided. This does work for stock ROM phones. Do you know any other way to get into the test mode?
Haven't tried stock. Im on cm10..
Xda I747
I'm on CM10.1 not stock.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Yeah I'm pretty sure everyone is using cm10 or aokp. Not sure if stock is having these problems. If they were I'd be on the phone yelling at Telus.
Xda I747
So let me get this right. This fixes the signal jumping around on cm10/aokp ROMs?? That's the only reason I stay on a stock based rom. I'm tired of seeing my signal jump back and fourth from 4g to 3g etc. On stock I always have a rock solid signal. It does not jump around..... Thanks in advance...
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Yes for me and others didn't even get 4g, also it would completely go out of service. Now I get steady 4g.
Xda I747
Any alternative way to get into "test mode" other than using the keypad?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Sorry man, I tried looking around for a way. Could be the rom you're on. I know Liquid and Carbon are fine. Probably a couple more that I don't even know of, others have success with.
Xda I747
rpomponio said:
So let me get this right. This fixes the signal jumping around on cm10/aokp ROMs?? That's the only reason I stay on a stock based rom. I'm tired of seeing my signal jump back and fourth from 4g to 3g etc. On stock I always have a rock solid signal. It does not jump around..... Thanks in advance...
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
stock lies to and shows 4G all the time, cm10 and show the truth. the s3 sets at 3g until data is needed then transfers to 4g

[Q] ace 2 network problems

Hello
I've just bought a new galaxy ace 2 and I am experiencing some problems.
When I'm using only gsm network type (i think, now I'm testing HDSPA), typically, when I'm logged on icq, mobile sometimes loosses signal and displays there is no service. After few seconds is everything OK and network is back at full singal. This can be seen also in battery usage view, when I'm having always yellow line with thin red places.
I'm now using it with mixed mode on HDSPA and there are no problems with network.
The phone is under warranty, so there is no problem, but I dont have much time and first I would try other solution. I tried to flash it with odin to same fw, but no change. I tried to google it but I didnt find any solution. Could you give me advice?
Thanks for answers
Odp: [Q] ace 2 network problems
Check phone with another sim card (another operator, wipe phone - go back to stock settings)
Sent from my Ace 2 using xda premium
Thanks for reply, I'll try
Today I was all time on HDSPA a there was no problem
Had this problem before I updated to 4.1.2. Use to happen on trains for some reason as well.
Yeah I've same paroblem with a specific operator.(stock GB rom)
still experiencing that problem, any more ideas?
no problems when 3g or data connection off
thinking about installing mc8 but I'm not sure, because I've a 8160P version
I also have problems with mobile data. I have done everything :factory reset, flashed roms, and finally fid solution yesterday but i have problem again . My mobile data doesnt work no any type of network and do icon
Please somebody help !
Stevk said:
Had this problem before I updated to 4.1.2. Use to happen on trains for some reason as well.
Click to expand...
Click to collapse
Well the "train" issue is due to the train being like a faraday cage, blocking the various microwave signals, the reason you get a signal on a train is because they have amplifiers to retransmit the signal into the train and vice versa.
...what network?
I have problem with mobile data. Apn: ERONET START (gprs.eronet.ba) i can acess with other phone on my sim card. Problem is in my phone but i dont know how to solve it. I can send messages and call but no any sign of data
Sent from my GT-I8160

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