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Help - Cm7 Update - G2x - No APN connection....

Hey Everyone,
Whenever I update to any version of cm7 and flash a new kernel with it I lose APN connectivity... I can't manually connect either. No 2g/4g nothing. Wifi is fine. I've tried multiple versions of cm7, etc. I don't have the same issue with Eagle 1.0.4 and/or Team Whiskey, flashing back to stock, etc. but anytime I try to check out CM7 I can't get it going! I figure it's something simple but does anyone have any ideas so I can try to get some OC going! Lol...
Thanks Everyone...

deadly1 said:
Hey Everyone,
Whenever I update to any version of cm7 and flash a new kernel with it I lose APN connectivity... I can't manually connect either. No 2g/4g nothing. Wifi is fine. I've tried multiple versions of cm7, etc. I don't have the same issue with Eagle 1.0.4 and/or Team Whiskey, flashing back to stock, etc. but anytime I try to check out CM7 I can't get it going! I figure it's something simple but does anyone have any ideas so I can try to get some OC going! Lol...
Thanks Everyone...
Click to expand...
Click to collapse
FYI: wrong forum.. Be ready for some people to be mean to you. Just a heads-up.. lol

Sorry I'd more than happily move it. I'm completely new really to posting here obviously but been lurking for a while now. Don't mean to be a complete noob lol

deadly1 said:
Sorry I'd more than happily move it. I'm completely new really to posting here obviously but been lurking for a while now. Don't mean to be a complete noob lol
Click to expand...
Click to collapse
It's already been reported. A mod will move it shortly. Next time post in the Q&A section. This area is for Development only...hence the name.

Try it without the kernel.
- BFL

I've been recently having the same problem.

Not a problem, this was a question concerning development and more or less the roms I'm downloading from this section hence I posted it here... won't happen again.
As for flashing w/out the kernel, I thought you needed another kernel to run cm7 with? I'm trying to overclock basically which I can't do on the stock kernel either.... so I'm not really sure what to do but I'll see if I can flash back to gingerbread, get my data going and flash back to cm7 w/out using any new kernel... have to make sure the rom doesn't autoinstall the new kernel either when you flash the rom

Update the apn settings for t-mobile. You can find them online just by looking them up. Try that.
-Insert signature here-

twitch153 said:
Update the apn settings for t-mobile. You can find them online just by looking them up. Try that.
-Insert signature here-
Click to expand...
Click to collapse
Give me a few I'll try to manually add them as an apn. thanks!

deadly1 said:
Give me a few I'll try to manually add them as an apn. thanks!
Click to expand...
Click to collapse
What works for me is a hard reboot. Hold volume up and power for 8 seconds. Apn should be there when you boot back up (usually). I have this issue with stock and any other kernel
Sent from my LG-P999 using XDA App

SOLVED!
I had the exact same issue and fixed it by installing the SIM card that came in the GX2 box.
I had been using my Nexus One SIM up to that point. The T-Mobile customer service rep told me that the G2X needed the updated SIM card and that without it, there would be data issues when not on Wi-Fi.
Write the SIM card information down before installing it in the G2X and calling T-Mobile (or whoever is your service provider) b/c they need the serial number in order to properly provision the phone.

Apothegm said:
What works for me is a hard reboot. Hold volume up and power for 8 seconds. Apn should be there when you boot back up (usually). I have this issue with stock and any other kernel
Sent from my LG-P999 using XDA App
Click to expand...
Click to collapse
Worked like a charm!!! Thank you!!
Simple yet effective lol
Finally up and running on cm7 with no apparent issues to report!

Also I found out that going into settings,into the apn settings,pressing menu then reset to default seem to kick it outta limbo

Great info everyone, thanks!
I'm still working on getting the market up and running on cm7, but otherwise everything is running really clean!

Thread moved to proper forum.

I have the same issue, and only on CM7..
Other Stock roms work OK for 3G
I have 2 sims - one uses regular APN setting (supplied from simcard) the other one is manual
The one that uses default (simcard) apn worked once after first install..
Than doesnt work..
VOL up + power didnt do the trick..
Whenever I put the custom APN simcard, it doesnt apply the settings..
Very weird..

I'm using the SIM out of my G2x box. Maybe it helps a little but it still happens when coming from a reboot, wifi, or airplane mode.
When you go to Mobile Networks, it won't connect to any of the listed networks.
This is already known and discussed, but to put a solution to this thread:
Go into Mobile network.
Let it scan
Select ANY network, it will error
Select Automatic until it reconnects again
Done.
Once it reconnects, you should be able to go into APN settings and see "Simple" and "T-Mobile". Sometimes if you can you select "Simple" then select "Tmobile" again, it speeds things up.
Works EVERY time. Sucks it requires this most of the time but it only takes a second and will stay connected for as long as the phone is turned on.

Hard reset (VolUP+Power) didnt work..
Is it a problem with their firmware?
I require custom APN's on my Network operator -- stock (or eagle blood/team bionics) work great, but CM7 doesnt for some reason..
Cant figure out why..
Even 7.1 RC0

.me said:
Hard reset (VolUP+Power) didnt work..
Is it a problem with their firmware?
I require custom APN's on my Network operator -- stock (or eagle blood/team bionics) work great, but CM7 doesnt for some reason..
Cant figure out why..
Even 7.1 RC0
Click to expand...
Click to collapse
APN's won't stick until you do what I said above. Once you disconnected and reconnect, APN's should pop up. If you created your own APN, it should THEN be displayed.
Even customs APN's won't be displayed until you disconnect/reconnect using the methods above.

player911 said:
I'm using the SIM out of my G2x box. Maybe it helps a little but it still happens when coming from a reboot, wifi, or airplane mode.
When you go to Mobile Networks, it won't connect to any of the listed networks.
This is already known and discussed, but to put a solution to this thread:
Go into Mobile network.
Let it scan
Select ANY network, it will error
Select Automatic until it reconnects again
Done.
Once it reconnects, you should be able to go into APN settings and see "Simple" and "T-Mobile". Sometimes if you can you select "Simple" then select "Tmobile" again, it speeds things up.
Works EVERY time. Sucks it requires this most of the time but it only takes a second and will stay connected for as long as the phone is turned on.
Click to expand...
Click to collapse
I feel like we're missing a step here. There isn't anything to select, unless you go under Network Operators or Access Point Names. APN is blank for me, so i can't select anything, and doing anything under Network operators doesn't work...

[Q] Not registered on the network problems

I've read a lot on the internet but have not found a good answer for me. In certain locations, almost daily, I get either a "not registered on the network" message or a "sim not allowed ##3" message on my Infuse. If I switch the phone to airplane mode and then back off of airplane mode it always reconnects to the AT&T network. The problem started after I changed my ROM from Infused 1.5.3 to Zeus 6. I've flashed to Mind of Mac 1.4 but that didn't fix the problem. I've tried a new SIM card, different APN settings and several other changes, but it didn't help. If I have a good 4g connection it never has the problem. It never re-registers on the network until I do the airplane mode on and off thing or reboot the phone. My iemi number shows up weird on the phone too. What is the best way to fix this problem? Thanks.

No one has a clue?
No one has a clue how to fix the problem? It happens when I lose 3g or 4g connection.

What modem do you have?
Sent from my A500 using xda premium

Modem
I currently have UCLB3. I have tried a few different ones but it does the same thing with each one I've tried.

Sounds like you know what you are doing , unfortunately it sounds like a hardware issue. If going to settings > mobile networks > network operators and choosing AT&T does not fix it the only thing to suggest is return for repair or exchange. As you know, you will have to return it to stock so after you do that you may want to test it one more time. Sorry, not the answer you wanted but the best answer I have, Regards.

The following were found by googling "Samsung infuse imei"
http://forum.xda-developers.com/showthread.php?t=1726149
http://forum.xda-developers.com/showthread.php?t=1729838
Idk if those will help...but maybe if you restore your imei so its no longer weird your problem will be fixed...
Sent from my HTC Holiday using Tapatalk 2

mg2195 said:
The following were found by googling "Samsung infuse imei"
http://forum.xda-developers.com/showthread.php?t=1726149
http://forum.xda-developers.com/showthread.php?t=1729838
Idk if those will help...but maybe if you restore your imei so its no longer weird your problem will be fixed...
Sent from my HTC Holiday using Tapatalk 2
Click to expand...
Click to collapse
From recent experience - I would avoid using the fixes listed above as they will change your IMEI.
I say this as I was having a similar issue -- I had been running on the ParanoidAndroid ICS rom for a few days and my I997 started to do the same thing. Network connection was fine most of the time but it would occasionally drop out to no network. Except swapping between airplane mode didnt always fix it. If i rebooted the phone and it would pop up with "Unknown" Baseband Version, and no IMEI/IME SV until it connected again... whenever it decided to do so.
I flashed a few different modems to no avail.
Used GTG's stock restore... and it still showed no baseband or IMEI.
Searched through everything i could find and I found the 2 above posts. Being the cautious person that I am, I was skeptical to run the "fix" since I know playing with the efs folder can do.. fun things.. I backed it up with EFS Pro.
http://forum.xda-developers.com/showthread.php?t=1308546
So after that - I did the fix from those two posts. It worked. I got a signal. HUZZAH. But I could only make a few calls before it would drop out, and I couldn't send or receive text messages at all they would just stall and error out.
So I took a look at the IMEI again and noticed that it was NOT *my* IMEI, it was presumably the imei of the person who Truckerglenn got the backup from so long ago.
Figured at this point my phone is going to have to go back to Samsung to fix since it's still dropping out, the IMEI is wrong and I can't send texts
Can't break it anymore than it's already broken right?
Go back into root browser, delete the EFS folder entirely. *poof* gone. Reboot. Use EFS Pro to restore the backup I had created (GOOD THING!) phone reboots. Instantly picks up the signal again, I get 15 text messages, 2 voicemails AND my IMEI shows what it should be now.
*HOPEFULLY* it holds onto its connection now. If not, back to stock and back to samsung it goes - now with the correct IMEI. heh
Sorry for the long story

Thanks! May have found a partial fix.
Thanks for the tips and information. I think I may have found a partial fix. It seems that picking the "WCMDA only" in the "Network Mode" options seems to solve the problem for me. If it is set on "GSM/WCCMA (auto mode)" option, it seems to cause the "SIM not allowed ##3" or the "not registered on the network" problem when I am in an area where the 4G or 3G signal is weak. I will do some more testing. It appears that if I don't have 3G or 4G available in any given location my phone won't connect to the cell towers at all even though other users can connect without any problems. Does this give anyone any other ideas? Do I possibly just need new APN settings?

Have you tried flashing a new radio? Does a complete wipe and restore to UCLB3 make any difference?
Has any of these roms/firmwares that you flashed been done so through Aroma installer? I know Aroma gives you the option to change modems, and if your download was buggered that could have caused it.
I'm just tossing ideas around here... I'm up early and looking to help.

The work around works
Yes, I have flashed the radio but that didn't help. I have discovered the "fix" is to set my phone on "WCDMA only". It seems that the phone will only work if 4G or 3G is available. I am not longer getting the original error messages. So that's a good thing. If I ever go to where 3G and/or 4G is not available I will have to try something else. Thanks for all the replies.

[Q] No mobile data after reverting from CM to stock

Okay, so I've been searching the net for days and to no avail. I installed the new Cyanogenmod on my Nexus 5 and found it, well, awful. It kept hanging, restarting etc. Now when I tried to revert back to stock, I downloaded the image file from developers/google/com/android/nexus/images, and there's no 4g. No mobile data whatsoever. I can call, the Wi-Fi is working, but no mobile data. I've tried factory resetting, installing a different radio zip etc. When I install Cyanogenmod again, the 4g works again, but after going back to stock nothing again. Any help?

Wow, this is stupid, but after trying everything, including running every new stock rom, I tried installing the 4.4 (KRT16M) AND IT FINALLY WORKED. I'm gonna leave this up for anyone in the same situation as me.

Well, would you guess, the problem's back, but from a different angle. After installing 4.4.0, and letting the device upgrade itself to 4.4.4, the data worked perfectly. Now I tried to install the android L developer preview and again no data connection.
Does anyone have any idea if it could be a regional issue or something? I tried flashing older radio zip files but to no avail, now back to 4.4.0 .

Try setting a new APN with your carrier settings.

I lost connection all together last Saturday. I flashed CM 11,Friday and all was well. Received a call Saturday, it rang once then lost connection. Had to reboot four times to regain service and that was short lived. After any call incoming or outgoing, I lose service. All APNs are present. WiFi works. SIM alert when SIM is removed. SIM works fine in my N4. Did a complete tear down and it's not hardware related.
---------- Post added at 09:58 PM ---------- Previous post was at 09:58 PM ----------
Sim works fine in my N4 also

If you loose signal might be a radio problem, still if you have signal but no connectivity try with the new APN, android (CM, stock unless carrier stock) had errors in the APN list for my carrier and I had to manually add it each time I used a new rom for several years.

Itsukki said:
If you loose signal might be a radio problem, still if you have signal but no connectivity try with the new APN, android (CM, stock unless carrier stock) had errors in the APN list for my carrier and I had to manually add it each time I used a new rom for several years.
Click to expand...
Click to collapse
im having some trouble with my radio also, it will work fine for a bit, then out of no where, ill download an app and it the signal will just go blank, not grayed out, but blank, ive tryed many different things but not apns, would anyone happen to know what T-mobiles apns are?
Edit: I just now noticed in my list of apns, its set to Metro pcs, and theres a few Tmobile apns, what should i choose?
tmobile
tmobile LTE
or tmobile LTE ipv6?

Andromendous said:
im having some trouble with my radio also, it will work fine for a bit, then out of no where, ill download an app and it the signal will just go blank, not grayed out, but blank, ive tryed many different things but not apns, would anyone happen to know what T-mobiles apns are?
Edit: I just now noticed in my list of apns, its set to Metro pcs, and theres a few Tmobile apns, what should i choose?
tmobile
tmobile LTE
or tmobile LTE ipv6?
Click to expand...
Click to collapse
What were the last few apps you do loaded before this happened to you

BlackElvis79 said:
What were the last few apps you do loaded before this happened to you
Click to expand...
Click to collapse
i think speedtest, advanced download manager, the first time it happend, i had just flashed slimkat 5.10, i set everything up, and i used the LTE quick tile to turn off LTE, my hole signal dissopeared and my phone crashed, i had to restore to stock to get it back. now it does as i discribed erlier.
man, i just got off the phone with a robot from tmobile customer service. she had me turn the phone off and pull the sim card, she told me she "refreshed" my service on her end and the problem was "gone". ya, its not.

[Q] Anyone else randomly have their data stop working?

Hi everyone,
Just wondering if anyone's had issues with their data not working after while and require a reboot/airplane mode to work again?
I've noticed it both with Wifi and also with Mobile Data where one minute it'll work, and then suddenly I'll lose signal and need to reboot or switch on/off airplane mode a few times before it connects again.
Thanks!

Nope, haven't noticed anything like that yet. Is this happening on LTE or H/H+?

Nope. Do you have Chinese imported or International version?

Not stop, just slow...
Oneplus arrived from China and CM 11 was installed OK. For over a week everything has been fine using Virgin network in the UK.
Since yesterday though the data has been rather slow when browsing or using apps that require a connection.
When switching the data on the phone does recognise between 3g/H/H+ but when trying to load anything it is far slower than what it has been before.
I've tried clearing the cache and even clearing data but to no avail. Tried a factory reset last night and thought it was OK for a bit but today the same thing...
When using the browser pages will load but the blue loading bar at the top never moves past the first centimeter. (Doesn't move when using WiFi either though speed is finewhen using that).
Already contacted Virgin in case there were any issues but say the service is fine.
Any advice for troubleshooting or things to check would be appreciated.
Cheers
---------- Post added at 06:56 PM ---------- Previous post was at 06:06 PM ----------
Another reset and browser OK... Haven't done any updates or or signed in to Google account or reinstalled any apps. I think a slow and steady install of what I want and syncing to see if there's a clash somewhere. Hmmm, not happy at all
Sent from my Nexus 7 using XDA Free mobile app

CephiroX said:
Hi everyone,
Just wondering if anyone's had issues with their data not working after while and require a reboot/airplane mode to work again?
I've noticed it both with Wifi and also with Mobile Data where one minute it'll work, and then suddenly I'll lose signal and need to reboot or switch on/off airplane mode a few times before it connects again.
Thanks!
Click to expand...
Click to collapse
I have had it where chrome wouldn't load webpages, usually it would start working again after a minute or two.

*sigh*... Thought things were fine last night but using it now its back to being slow again. No idea what's going on. Main update I had to install was Play Services. Chrome seemed a little funny so decided to roll it back at at the time things were alright but using it now its annoying. Took about 4 minutes to download a 3.5 meg file whereas it should breeze through it. I'm not expecting miracles but past experience was far better. Don't know whether there's anything I can do or just raise an issue with my original supplier.
Sent from my One using XDA Free mobile app

Strange.. for me, it's been both H/H+, LTE and Wifi that have had it happen to me..
Also, it's not the Chinese version. It's the International version I got from Oneplus. Lately it's been ok, but we'll see how it goes..

APN settings ok?
Do you have your preferred network set correctly?

Personally I've noticed no difference. Its set as EE by default but manually added Virgin's own to try.
Been working quickly enough again without rhyme nor reason.
Sent from my Nexus 7 using XDA Free mobile app

CephiroX said:
Hi everyone,
Just wondering if anyone's had issues with their data not working after while and require a reboot/airplane mode to work again?
I've noticed it both with Wifi and also with Mobile Data where one minute it'll work, and then suddenly I'll lose signal and need to reboot or switch on/off airplane mode a few times before it connects again.
Thanks!
Click to expand...
Click to collapse
I can confirm the same happening to me... I'm on WIND Mobile in Ontario, Canada. It won't show that you lost the connection, things just stop loading... and the only way to fix it is to toggle airplane. It happens quite often, like a few times an hour. It's definitely a software issue that I'm hoping will be worked out in future updates, or maybe I'll have better luck with another ROM.
rAy

Same thing
ray2jerry said:
I can confirm the same happening to me... I'm on WIND Mobile in Ontario, Canada. It won't show that you lost the connection, things just stop loading... and the only way to fix it is to toggle airplane. It happens quite often, like a few times an hour. It's definitely a software issue that I'm hoping will be worked out in future updates, or maybe I'll have better luck with another ROM.
rAy
Click to expand...
Click to collapse
I've noticed it a few times where I'll swipe to the left (using Google launcher) and Google Now will indicate there is no internet connection even though I'm in an area with solid coverage. Usually if I swipe down a few times to refresh it will reconnect and update. Today however I had to reboot to reconnect. I have already checked my APN and it's fine. Did not have this issue even once with my Nexus 5 or my OPPO 7A I've been using. I'm going to check the CM bug log to see if it's been reported there.

I*have the same issue. Seems to happen when the 4g signal is weak and the handover to 3g does not happen. Then signal is lost instead.
I changed my APN now, but don't think it will matter... I'll give it a go. Using Franco kernel now, but is probably baseband related. Never had issues with my g2 previously on same location and APN.
In Norway BTW...reboot solve the problem temporarily

I have the same problem. My data connection will just stop at random and Facebook and Google now won't refresh, YouTube videos will suddenly stop playing, and upon hitting retry I'll get an error in both the playback screen and comments, and also the speedtest app won't finish preparing the test when I go to verify that my data connection is severed. I would have to restart in order to get data working again. I do get LTE speeds when it works, but it seems that the OPO takes longer to ramp up to those speeds compared to my Nexus 5 if that makes any sense?

LineageOs No Cellular Data after initial install.

So I 'sideloaded' LineageOs on my stock OPO the other day with the current TWRP, and have not had mobile data since. I have searched around a bit and found on the OPX that they have a fastboot flashable bootloader that fixes the issue there. Do we have anything like that here that doesn't involve going back to stock? Or does anyone know a fix for this issue?
used adb sideload to install TWRP.
Then used sideload to install lineage and nano gapps in TWRP.
Went a day without realizing I had no data.
Started toggling airplane mode. Redid apn that was already there. Reboots etc.
Searched around on xda.
Downloaded and flashed most recent c7 modem.
Searched around on xda.
Making this post.
Thanks for any help.

Looks like I got it fixed. Through my searching I saw where peeps are able to stick in another sim and get data to work. So I decided to call ATT gophone.
Turned off wifi.
Turned off cellular data.
Went to APN and changed the apn (ATT Go Phone) from pta to nxtgenphone.
Turned on cellular data.
Finally had H+ above he signal bar, but had an X inside the bar.
Don't know if he did anything on his end, but the X went away after a couple of minutes.
Data was working, albeit kinda slow.
Turned off phone for three minutes per ATT rep.
Rebooted.
Data still slow, but it is at least working. Thinking I need to flash different modem. Battery usage has been higher the last day or two since I flashed c7 anyways.

Thank you
This worked for my Honor5x l22 version with an Att gophone sim card. Im forever in debt.

Thanks! This msolved the problem for me.
I installed (and reinstalled) LineageOS on my Note 3 and nothing could fix mobile data. This post saved the day.
I had to do one more change:
APN type -> default,mms,supl,hipri
Detailed settings are available at https://www.att.com/esupport/article.html#!/wireless/KM1218306?gsi=6Bft054
phermey said:
Looks like I got it fixed. Through my searching I saw where peeps are able to stick in another sim and get data to work. So I decided to call ATT gophone.
Turned off wifi.
Turned off cellular data.
Went to APN and changed the apn (ATT Go Phone) from pta to nxtgenphone.
Turned on cellular data.
Finally had H+ above he signal bar, but had an X inside the bar.
Don't know if he did anything on his end, but the X went away after a couple of minutes.
Data was working, albeit kinda slow.
Turned off phone for three minutes per ATT rep.
Rebooted.
Data still slow, but it is at least working. Thinking I need to flash different modem. Battery usage has been higher the last day or two since I flashed c7 anyways.
Click to expand...
Click to collapse
---------- Post added at 04:38 AM ---------- Previous post was at 03:52 AM ----------
Another related problem and solution.
Whenever I switched on WiFi mobile data would turn off. Then when WiFi disconnects, Mobile Data never came back. Turning it back required turning on & off Airplane Mode or restart.
What fixed it:
- Go to developer option and select "mobile data always active"
- I also selected "Aggressive Wi-Fi to Cellular handover". Don't know if this option helps with this problem but I have it on (remnant of trial & error).
(I know it's an old thread but recording it here so that someone else benefits as I did.)
anujprateek said:
I installed (and reinstalled) LineageOS on my Note 3 and nothing could fix mobile data. This post saved the day.
I had to do one more change:
APN type -> default,mms,supl,hipri
Detailed settings are available at https://www.att.com/esupport/article.html#!/wireless/KM1218306?gsi=6Bft054
Click to expand...
Click to collapse