No cell signal, wifi works - Nexus 5 Q&A, Help & Troubleshooting

My Nexus 5 suddenly has no signal today, but WIFI is working (my nexus tab has a cell signal so its not a network issue.)
was using CM12.1 (5.02) tried the following:
reboot (many times)
did a factory reset/wipe
flashed a new CM rom (Euphoria 1.1)
hit *#*#4636#*#* and checked the radio is on
popped the back and cleaned the antenna contacts
None of the above worked, now I'm wondering what to do next...?
Any suggestions would be gratefully appreciated.

sleepingsword said:
My Nexus 5 suddenly has no signal today, but WIFI is working (my nexus tab has a cell signal so its not a network issue.)
was using CM12.1 (5.02) tried the following:
reboot (many times)
did a factory reset/wipe
flashed a new CM rom (Euphoria 1.1)
hit *#*#4636#*#* and checked the radio is on
popped the back and cleaned the antenna contacts
None of the above worked, now I'm wondering what to do next...?
Any suggestions would be gratefully appreciated.
Click to expand...
Click to collapse
Flash factory images.

Sim card issue?

Turn off airplane mode lol

sleepingsword said:
My Nexus 5 suddenly has no signal today, but WIFI is working (my nexus tab has a cell signal so its not a network issue.)
was using CM12.1 (5.02) tried the following:
reboot (many times)
did a factory reset/wipe
flashed a new CM rom (Euphoria 1.1)
hit *#*#4636#*#* and checked the radio is on
popped the back and cleaned the antenna contacts
None of the above worked, now I'm wondering what to do next...?
Any suggestions would be gratefully appreciated.
Click to expand...
Click to collapse
Do you have an IMEI (Settings>About phone>Status)?

IMEI is present
Airplane mode is off :silly:
Sim card is fine, I tested it in my old i9300
I guess I will go factory image later today and see about that.
Thx so far.

Well it appears the fone is dead...
I restored a factory image (4.4.0)
Still no cell signal.
Going through the updates 4.4.2 > 4.4.3 etc, but I doubt its going to make a difference.
Bought in 2013... I hope (but doubt) I can get it fixed under warranty

sleepingsword said:
Well it appears the fone is dead...
I restored a factory image (4.4.0)
Still no cell signal.
Going through the updates 4.4.2 > 4.4.3 etc, but I doubt its going to make a difference.
Bought in 2013... I hope (but doubt) I can get it fixed under warranty
Click to expand...
Click to collapse
It's not enough to restore factory image. Try to flash completely stock. http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701

Sorry for my wording, I went completely back to stock and unfortunately it did not fix the issue.
It is still covered under warranty and with the stock restore its is now ready to be sent back.
Back to the old i9300 for now!

sleepingsword said:
Sorry for my wording, I went completely back to stock and unfortunately it did not fix the issue.
It is still covered under warranty and with the stock restore its is now ready to be sent back.
Back to the old i9300 for now!
Click to expand...
Click to collapse
After you flash back to stock, what steps are you taking when setting up the phone again - are you restoring app backups and stuff? I had this same problem, when I restored as new and did not use the google backups, my radio/mobile network returned.

I dint bother setting up my accounts or restoring backups as I expected it not to work.
I did not want to bring unforeseen things into the mix.
Restored 4.4, made sure it was unrooted and the tamper counter was reset. locked the bootloader.
Then skipped the google account part, only added wifi password. Then went through the system updates.

sleepingsword said:
I dint bother setting up my accounts or restoring backups as I expected it not to work.
I did not want to bring unforeseen things into the mix.
Restored 4.4, made sure it was unrooted and the tamper counter was reset. locked the bootloader.
Then skipped the google account part, only added wifi password. Then went through the system updates.
Click to expand...
Click to collapse
Mine did the same thing (worked for phone/texts but not mobile data), and in my searching there seems to be a related fix having to do with APN settings, but those are only accessible in settings, under mobile network, if you have a specific carrier.
Try searching around here for "APN XML" or "APN update" and you'll find steps on how to check/fix. Hope that helps.

Related

No VZW service after flashing.....need some guidance please

I was running Paranoid android for a while and all was fine. Phone started glitching , so I did a reinstall. Thats when my mobile service went out. Here what I did.
1. Noticed IMEI was B00000, so i re-copied my backup and IMEI fixed. Still no network.
2. I reflashed a new VZW modem and still no network.
3. Checked out phone info, and it shows no service. Phone Info shows corrected IMEI, network type as LTE/CDMA. But says "searching for service"
4. I went ahead and unlocked, booted in to CWM 6.0.1.0 and installed CM10 and Gapps. All loaded fine, but still no network.
Anyone have any idea how I can fix this?
heynicebits said:
I was running Paranoid android for a while and all was fine. Phone started glitching , so I did a reinstall. Thats when my mobile service went out. Here what I did.
1. Noticed IMEI was B00000, so i re-copied my backup and IMEI fixed. Still no network.
2. I reflashed a new VZW modem and still no network.
3. Checked out phone info, and it shows no service. Phone Info shows corrected IMEI, network type as LTE/CDMA. But says "searching for service"
4. I went ahead and unlocked, booted in to CWM 6.0.1.0 and installed CM10 and Gapps. All loaded fine, but still no network.
Anyone have any idea how I can fix this?
Click to expand...
Click to collapse
Try flashing to stock with odin. Once you're back to stock dial:
*2767*3855# (which will wipe EVERYTHING on your internal SD and set your phone back to factory restore)
heynicebits said:
Anyone have any idea how I can fix this?
Click to expand...
Click to collapse
Zalithian said:
Try flashing to stock with odin. Once you're back to stock dial:
*2767*3855# (which will wipe EVERYTHING on your internal SD and set your phone back to factory restore)
Click to expand...
Click to collapse
Yup try that, sounds like you didn't reprovision it after restoring your backup
So I reloaded stock everything, locked back up the bootloader, loaded the original modem and took it back to verizon. They popped in a new sim which restored data, but the IMEI still read at 0. Data and calls worked, even got the 4g icon. They said it was fine that it read zero and that it was just a network issue. The look on my face was "wtf?"
flash back to stock
heynicebits said:
So I reloaded stock everything, locked back up the bootloader, loaded the original modem and took it back to verizon. They popped in a new sim which restored data, but the IMEI still read at 0. Data and calls worked, even got the 4g icon. They said it was fine that it read zero and that it was just a network issue. The look on my face was "wtf?"
Click to expand...
Click to collapse
So is it working like it should? and have you flashed a rom to see if it still works?
You can try this. When you said you backed up did you back up with qpst?
http://forum.xda-developers.com/showthread.php?p=29462348
Here's how to back up with a tutorial
http://rootzwiki.com/topic/32397-tutorial-imei-backup-nv-with-qpst-us-variants/
I haven't had to restored just thought this might help but sounds like it may have worked its self out with Verizon.
Sent from my Amazon Kindle Fire using Tapatalk 2
Zalithian said:
Try flashing to stock with odin. Once you're back to stock dial:
*2767*3855# (which will wipe EVERYTHING on your internal SD and set your phone back to factory restore)
Click to expand...
Click to collapse
Seriously, READ, do this!!!!!
I did same thing as you. Had a backup of my imei that I pushed back to my phone, only nothing happened either. Then I reprovisioned it using this and it went back to 100% working and displaying accurately.
Sent from my Galaxy S3 using Tapatalk 2
Zalithian said:
Try flashing to stock with odin. Once you're back to stock dial:
*2767*3855# (which will wipe EVERYTHING on your internal SD and set your phone back to factory restore)
Click to expand...
Click to collapse
Had the same problem, this worked like a champ. Thank you!
LXative said:
Had the same problem, this worked like a champ. Thank you!
Click to expand...
Click to collapse
No problem. Glad it's helping some people. I had a roaming/no data issue when I flashed a CM10 nightly and that fixed it for me too, so hopefully more people will realize it's a possible fix for those sorts of problems (assuming they still have their IMEI)

IMEI restored, still no data

Trying to help a friend who lost his IMEI (showed as 0), I restored it with the QPST method successfully. All the numbers are there and the IMEI is correct, but it still doesn't have data. I tried calling the number in the older efs backup thread to reprovision, and it didn't seem to do anything, but while I was messing around with it the icon popped up and I had one bar of 4G, but it disappeared after a few seconds. I'm out of ideas and I would greatly appreciate any help. Thanks!
Sent from my Incredible 2 using Tapatalk 2
Sorry to bump, but this is getting lost down here...
Sent from my Incredible 2 using Tapatalk 2
Have you used Odin to restore the stock rom?
con247 said:
Have you used Odin to restore the stock rom?
Click to expand...
Click to collapse
I tried, but but it failed, and don't remember the exact message. It's just on root66 right now.
Sent from my Incredible 2 using Tapatalk 2
prototype7 said:
I tried, but but it failed, and don't remember the exact message. It's just on root66 right now.
Sent from my Incredible 2 using Tapatalk 2
Click to expand...
Click to collapse
If on stock (root66 sounds) dial: *2767*3855#
Back up anything you may want on the internal storage before doing so. Should fix it if it's fixable.
This ^^^^.
I had lost mine also and followed the same instructions, got it all back, but no data return. You need to reprovision your phone by following the key sequence. I think you need to be stock to do it too (could be wrong). After doing that, all my stuff returned to 100% fully functional.
You definitely need to be on stock for it, though? What's it do specifically? I never outright lost my IMEI, but I did have a problem where data would intermittently cut out and it didn't display a phone number in the system info.
After a wipe and install it seemed to be okay, but now I'm without data. Phone number and all the other numbers are there, though. If I dialed that on CM10, what could I expect?
Zalithian said:
If on stock (root66 sounds) dial: *2767*3855#
Back up anything you may want on the internal storage before doing so. Should fix it if it's fixable.
Click to expand...
Click to collapse
I already tried that, it didn't work. I just tried it again and it still didn't work, but I left it locked for a while and when I unlocked it, the 4G icon was there for a few seconds, and then went back to no signal and it hasn't come back.
Sent from my Incredible 2 using Tapatalk 2
prototype7 said:
I already tried that, it didn't work. I just tried it again and it still didn't work, but I left it locked for a while and when I unlocked it, the 4G icon was there for a few seconds, and then went back to no signal and it hasn't come back.
Sent from my Incredible 2 using Tapatalk 2
Click to expand...
Click to collapse
Hmm if that doesn't work I'm not sure what else there is. Maybe a new SIM or phone, all I can think of
a new sim is needed, or you just have a data-bricked phone if that wont work... sorry bud
I'm not sure what it's doing, but I don't think it's unrecoverable. If I leave it for a while, when I unlock it I'll have a bit of 4G signal, then it disappears after a few seconds. I was able to use the browser while it had signal, but when I try to make a call it says "Mobile network unavailable." I did receive a few texts, I'll test sending them. Under Settings>About device>Status, all the numbers are there and everything looks normal except these:
Network - Searching for Service
Mobile network type - Unknown:0
Service state - Out of service
Mobile network state - Disconnected
Thanks for the help so far.
Sent from my Incredible 2 using Tapatalk 2
prototype7 said:
I'm not sure what it's doing, but I don't think it's unrecoverable. If I leave it for a while, when I unlock it I'll have a bit of 4G signal, then it disappears after a few seconds. I was able to use the browser while it had signal, but when I try to make a call it says "Mobile network unavailable." I did receive a few texts, I'll test sending them. Under Settings>About device>Status, all the numbers are there and everything looks normal except these:
Network - Searching for Service
Mobile network type - Unknown:0
Service state - Out of service
Mobile network state - Disconnected
Thanks for the help so far.
Sent from my Incredible 2 using Tapatalk 2
Click to expand...
Click to collapse
Have him activate another phone on his account and then reactivate the s3. I'm not sure if this will help. It's only a theory really! If you decide to try please Let me know if it works. Thanks
Sent from my SCH-I535 using xda app-developers app
On mine, I restored to the Nandroid backup I made of the stock rom before switching and dialed the number mentioned before. That brought it back to out-of-the-box stock. Set it up, tested data, rooted, unlocked bootloader, installed CM10, tested data, restored apps, tested data, made another Nandroid backup, restored system apps and preferences, and everything's fine now.
My problem was really similar to that one, too. It started when the phone wasn't coming on when I pressed the home or power buttons, and after a battery pull it showed the phone number as "Unknown." A wipe and reinstall of CM10 showed all the correct numbers in the right places and seemed to fix it all, but data was back out in time. That was how it was every time I reinstalled that way; it'd work for a bit, then stop until I reinstalled again. Restoring my IMEI backup as a "just in case" hadn't helped either. Getting everything right again was arduous, but worth it.
Alright my dad has got a similar problem. He lost his IMEI before, we managed to get it restored and data working and all that good stuff. Well today he had to fly to Denver and put the phone into airplane mode, well when he came out of airplane mode it was stuck on roaming mode, and network is "Unknown" his IMEI, phone number, and all those numbers are correct but hes still stuck in roaming. We tried pulling the sim card, and going back to a root66 backup and then reprovisioning the phone. Any other ideas? Should he go back to complete 100% unrooted stock and then reprovision? Any help would be great
I've had the problem come back for me, so disregard my earlier post. I'm back on stock now with no data issues so far, so I'm going to sit on that for a bit to see if the problem is definitely with CM. It's been gradual every time I've fixed it; last time I lost LTE before 3G.
coldcaption said:
I've had the problem come back for me, so disregard my earlier post. I'm back on stock now with no data issues so far, so I'm going to sit on that for a bit to see if the problem is definitely with CM. It's been gradual every time I've fixed it; last time I lost LTE before 3G.
Click to expand...
Click to collapse
are you on stock unrooted? or stock rooted?
Neverendingxsin said:
are you on stock unrooted? or stock rooted?
Click to expand...
Click to collapse
Stock rooted. Gotta have my titanium backup!
coldcaption said:
Stock rooted. Gotta have my titanium backup!
Click to expand...
Click to collapse
did you use odin to return to stock rooted? or just restore a nandroid?
Neverendingxsin said:
did you use odin to return to stock rooted? or just restore a nandroid?
Click to expand...
Click to collapse
Restored a Nandroid. LTE isn't working though, so I may dial *2767*3855# to go back to full stock and see if that fixes it. Currently 3G is still okay.
A question...
Those losing their IMEI numbers... Is this happening on the locked bootloader? Unlocked bootloader? Both?
I've been digging through the forums trying to ferret out a pattern, but it's not presenting itself to me. Maybe someone else has seen the pattern?

[Q] At a loss, data but no voice/sms

I was running the latest stable version of CM10.1 on my GS3 and all was going well until someone sent me a text message and I tried to respond. I was greeted with the error of message not sent. I attempted to text someone else to have the same error. Attempting to call someone will just hang and eventually say call failed.
I thought it was a radio issue so attempted to flash different modems but had the same result. So I restored my previous rom Beans 11 that was working after wiping and the same issue. Data works perfect, but voice and text does not. I searched and odin'd back to stock VRLG1 and entered *2767*3855# in hopes of that fixing the problem, again no voice/text.
Any suggestions further help? I don't know what else to try!
*CM10.1 was working fine, and then calls/texting stopped but data continued to work without trouble.
*IMEI seems to be intact
*Flashed backup of known working rom and issue still persists
*Flashed back to VRLG1 and attempted *2767*3855# as per another post to no avail and this is where I sit.
Same thing. Installed jellybeans 12 now I can't call or text. Prior text was hit and miss some days....restored stock rooted image flashed other Roms....no help. Dialed the ** number....so screwed. Ayneegry should have backed up my few several times. No idea what to do.
Sent from my SCH-I535 using Tapatalk 2
When you say "Data" do you mean wifi or 3g/4g? If you have no phone/text/3g/4g then it's probably your imei. Check under phone settings, see if it's gone. If it's gone you gotta restore, do a search.
If you have 3g/4g then I don't know what the problem is. Sorry, just trying to help
Odin back to ICS and reprovision your phone by going into the dialer and typing *2767*3855#
rgrossie - data as in 3G/4G works no problem... phone showed IMEI still there but followed a thread to restore it anyway to make sure that wasn't the issue...
Edgehood -- I've tried that, and that's where I currently sit, stock ICS with 4G data but doing the re-provision doesn't seem to fix anything -- occasionally a text will slip through, but I'm unable to reply
astrocity said:
Same thing. Installed jellybeans 12 now I can't call or text. Prior text was hit and miss some days....restored stock rooted image flashed other Roms....no help. Dialed the ** number....so screwed. Ayneegry should have backed up my few several times. No idea what to do.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
I hear ya, if I can't figure out what's up, I'll end up having to go back to verizon and see what I can do... It was out of the blue, everything was working and then suddenly it just stopped. Happened on a flash that was a little over a day old, so who knows.
Check Mobile network
I have thiss problem happen occasionally when I flash custom roms. Look under your mobile networks, see if either CDMA/SIM is checked or NV. If NV is checked switch to CDMA/SIM and then reboot. That seems to fix that problem most of the time.
Edit: After some tests found out this doesn't always stick, but I did find out that after switching from NV to CDMA/SIM turn on airplane mode so the radios are tunred off, wait a few moments, then turn airplane mode off. That worked more consistently than restarting it.
MrRevesz said:
rgrossie - data as in 3G/4G works no problem... phone showed IMEI still there but followed a thread to restore it anyway to make sure that wasn't the issue...
Edgehood -- I've tried that, and that's where I currently sit, stock ICS with 4G data but doing the re-provision doesn't seem to fix anything -- occasionally a text will slip through, but I'm unable to reply
Click to expand...
Click to collapse
Did you ever fix this? I currently have the same problem and have no idea what to do.
i had the same problem but a imei/efs restore fixed it. My imei was not missing but data worked and not calls or text. Changed sim and still same, even odined back to stock and unlockex and rooted no luck restored nandroid no luck. Then restored synergy imei/efs backup and good to go. Hope it helps.
Cruzin' tha Galaxy SIII via Obsessed Rom / "INAPPROPRIATE" Kernel
I had the same issue two days ago when I flashed to the latest MIUI Rom. Here's how I fixed it.
Go into settings, mobile networks, make sure subscription is set to SIM. After that open the phone, type *#*#4636#*#* make sure it's set to LTE/CDMA/AUTO
Reboot phone and all should be well.
Sent from my 16GB Blue Verizon Galaxy S3 running MIUI v5 with KT kernel
If you Odin back to the original stock unroofed ROM, you'd have to take all the ota Verizon updates to vmf1. Then reset your phone.
Pain in the a$$ but has always worked for me. I had same problem running carbon.
I read in another post that Odin back to root66, them reset your phone would work too.
Sent from my SCH-I535 using xda app-developers app

Problem after flashing 4.3 rom causing me to be stuck in 2g

I am having a huge issue with my phone. I have been flashing custom roms for the past few years and this is the first time I have ever ran into a issue like this. I flashed SlimRom 4.3 build 2 a couple weeks back, it was taking forever to switch between 3g and LTE sometimes up to 5 mins to lock. Not to mention the signal was super low. I ignored it for the most part as it is a newer rom and figured it was just a bug and would hold off for now till kitkat released.
Then my phone would just start random rebooting about once or twice a day. Then on my way home from work i was bluetoothed to my vehicle when it did a random reboot. After that Ive been stuck in 1xRTT since. I also managed to loose my IMEI and PRL version they are both set at 0 and I do not have a backup. Has anyone else ever had this issue? I don't have a clue how to get it working again. My phone is out of warranty I am in the midst of flashing it back to stock to see if that works. Ive searched for hours trying to find a fix. Thanks.
Reverted back to stock.still no luck. Also play store won't work. No connection wirh retry button even while connected to wifi
What firmware/radio do you have? If you've been on custom roms a while you might need to update your radio baseband (most current is VRBMF1). You can flash an updated radio without regard for the Rom you're using.
Sent from my SCH-I535 using xda app-developers app
---------- Post added at 10:29 AM ---------- Previous post was at 10:25 AM ----------
The imei thing is a separate issue. I lost mine without a backup when I first started flashing roms... I think it was cM at the time. I ended up going all the way back to an early stock image, grabbing the OTA updates and then rooting and flashing all over again. I don't know what part in particular got me my imei back.
Sent from my SCH-I535 using xda app-developers app
Do you mean a backup of efs partition or a nandroid? There is a thread at rootzwiki about recovering your imei-efs items. When u get it back do
Su
Reboot nvbackup
In a terminal then you wont have to worry about this again. If you have a nandroid restore it and you'll b good.
Yes my efs folder was completely empty. I reverted back to stock 4.0.4 still had a "0" for IMEI so i used QPST and entered in the IMEI manually and it stuck. I have signal back now. I just got factory mode off. Now my phone is stuck on "Activating", a factory reset should fix that. So this is resolved. Thanks for the help.
quicksilv312 said:
Yes my efs folder was completely empty. I reverted back to stock 4.0.4 still had a "0" for IMEI so i used QPST and entered in the IMEI manually and it stuck. I have signal back now. I just got factory mode off. Now my phone is stuck on "Activating", a factory reset should fix that. So this is resolved. Thanks for the help.
Click to expand...
Click to collapse
Is this the fix to get everything up and running again (flash back to ICS)? I was about to start my own thread until I read this. I lost my IMEI, ERI and MEID but didn't back it up first (I know I know ... boo). I manually input my IMEI using QPST like you did and was also able to fix my ERI and MEID and now I have data and text, but still no voice connection. I've flashed a stock (rooted) ROM and tried the reprovision code *2767*3855# and the RTN codes ##786# & ##72786# but nothing happens (I've seen in other forums this only works in ICS and not JB). Last night I downloaded a stock unrooted JB ROM (4.1.2) and ICS ROM (4.0.4) and am planning to ODIN back to stock and complete a factory reset to see if it will kick the gears back in motion again.
I'm not meaning to hi-jack this thread but confirm this is the solution to completing a non-backed-up IMEI/ERI/MEID fix.
-Edit-
There are tons of threads out there starting with "I've lost signal, what happened?" and ending with "I'll report back and let you know what I've found." or "Verizon replaced it for me." but none offer a viable user solution. I'd love to see the answer posted so other searchers out there can find help.
I can confirm everything you did will restore your IMEI/ERI and connectivity. I did all the steps you did (manually input IMEI and use the utility to repair ERI and MEID), then reverted back to unrooted stock using odin. I still didn't have signal until I did a factory restet IN THE ROM. Going back to stock using odin and doing a factory reset in CWM didn't fix the issue, but going into the phone's settings and completing a factory reset from there caused my signal and connection to come back.

No cellular connectivity whatsoever

So I've been flashing back and forth and restoring nandroids the entire day trying to troubleshoot and get xposed to work for 5.1. As of now, I've lost all cellular connectivity as in no cell service at all. Thought it may be my sim but I tried it out on my old Xperia Z1s and it works fine, sent text and tried downloading something from play store. Both worked fine so it's not the sim card (Tmo). I've been flashing and restoring both CM12 (last one available through the updater) and CM12.1 (4/18 nightly and just now 4/19 to try). Wifi works fine but there's no cellular signal/service. It's not acting as if there's no sim, it's acting as if there's no service at all, not even emergency cell signal. My guess is my modem is fried so I tried to flash the latest modem from XNPH44S but that didn't work either. I've searched the forums and googled but no one seems to have my exact issue. Most were either of stuck airplane mode or issues with APN settings. I'd be more relaxed if those were my issues as I'm really hoping I didn't fry my modem (hardware) flashing back and forth all day. Any suggestions?
gqukyo said:
So I've been flashing back and forth and restoring nandroids the entire day trying to troubleshoot and get xposed to work for 5.1. As of now, I've lost all cellular connectivity as in no cell service at all. Thought it may be my sim but I tried it out on my old Xperia Z1s and it works fine, sent text and tried downloading something from play store. Both worked fine so it's not the sim card (Tmo). I've been flashing and restoring both CM12 (last one available through the updater) and CM12.1 (4/18 nightly and just now 4/19 to try). Wifi works fine but there's no cellular signal/service. It's not acting as if there's no sim, it's acting as if there's no service at all, not even emergency cell signal. My guess is my modem is fried so I tried to flash the latest modem from XNPH44S but that didn't work either. I've searched the forums and googled but no one seems to have my exact issue. Most were either of stuck airplane mode or issues with APN settings. I'd be more relaxed if those were my issues as I'm really hoping I didn't fry my modem (hardware) flashing back and forth all day. Any suggestions?
Click to expand...
Click to collapse
Try restoring via fastboot for a clean slate. I understand from your post that you're flashing via custom recovery.
gqukyo said:
So I've been flashing back and forth and restoring nandroids the entire day
Click to expand...
Click to collapse
CM12.1 may flash the new radio that OxygenOS flashes, from which there is not necessarily an immediate return.
Possible you have that new radio. See here:
https://forums.oneplus.net/threads/oxygenos-back-to-cm11s.296219/#post-10851703
gqukyo said:
So I've been flashing back and forth and restoring nandroids the entire day trying to troubleshoot and get xposed to work for 5.1. As of now, I've lost all cellular connectivity as in no cell service at all. Thought it may be my sim but I tried it out on my old Xperia Z1s and it works fine, sent text and tried downloading something from play store. Both worked fine so it's not the sim card (Tmo). I've been flashing and restoring both CM12 (last one available through the updater) and CM12.1 (4/18 nightly and just now 4/19 to try). Wifi works fine but there's no cellular signal/service. It's not acting as if there's no sim, it's acting as if there's no service at all, not even emergency cell signal. My guess is my modem is fried so I tried to flash the latest modem from XNPH44S but that didn't work either. I've searched the forums and googled but no one seems to have my exact issue. Most were either of stuck airplane mode or issues with APN settings. I'd be more relaxed if those were my issues as I'm really hoping I didn't fry my modem (hardware) flashing back and forth all day. Any suggestions?
Click to expand...
Click to collapse
Can you still see your baseband and IMEI? Go into Settings/About Phone for the baseband version and Settings/About Phone/Status for the IMEI.
Transmitted via Bacon
Baseband is unknown and there's no mention of IMEI anymore... does that mean I lost my IMEI/it got corrupted? Am I screwed? I planned on trying the fastboot restore but only as one of the last resorts. If CM12.1 use the same radio then my 12.1 should work but that doesn't either. Nothing works. I've tried CM11s, CM12, CM12S, CM12.1... sigh...
I think I had a modem/efs backup in one of my nandroids and I tried restoring that too with no luck
Restored one of my CM12 nandroids and now I have a baseband of "DI.3.0.c6-00230-M8974AAAAANAZM-1". For some reason or another, that doesn't look right to me even though I've never really paid attention to what the baseband ever listed. Still can't seem to locate my IMEI #. I did the #*#*4636*#*# and the cell radio is on and turning it off and one still only shows emergency calls only. Obviously I'm not going to try to call 911 just to test if the radio gets service. However, I can see my IMEI # so I guess that's good. I must have some bad firmware update. Guess I'll copy out all my stuff to my otg usb and fastboot restore and see if that helps unless there's something else I can try.... please let me know...
gqukyo said:
Baseband is unknown and there's no mention of IMEI anymore... does that mean I lost my IMEI/it got corrupted? Am I screwed? I planned on trying the fastboot restore but only as one of the last resorts. If CM12.1 use the same radio then my 12.1 should work but that doesn't either. Nothing works. I've tried CM11s, CM12, CM12S, CM12.1... sigh...
I think I had a modem/efs backup in one of my nandroids and I tried restoring that too with no luck
Restored one of my CM12 nandroids and now I have a baseband of "DI.3.0.c6-00230-M8974AAAAANAZM-1". For some reason or another, that doesn't look right to me even though I've never really paid attention to what the baseband ever listed. Still can't seem to locate my IMEI #. I did the #*#*4636*#*# and the cell radio is on and turning it off and one still only shows emergency calls only. Obviously I'm not going to try to call 911 just to test if the radio gets service. It really does look like it's my IMEI # that got jacked... what can I do now?.... :T
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Click to collapse
You've got a corrupt EFS partition. There's a thread detailing how to fix your situation in our general section.
Transmitted via Bacon
tried to flash the persist.img from http://forum.xda-developers.com/oneplus-one/help/fix-brickloop-audio-fx-fc-efs-corrupt-t2879061 but that just prevents my phone from booting up properly. I only see the OnePlus logo with not Powered by Android on the bottom...
I take it back, it does show the powered by android but only for a split second then it stays on the OnePlus logo and doesn't do anything... :T
Restored back most recent cm12.1 nandroid and now I do see IMEI number in the about settings but still only emergency calls only... Guess its a good start, no sure what else I can do at this point.
Now you see your imei but you dont have the signal,it means your modem file does not work.So the first thing to do is backing up the efs then you can flash 44s modem and proximity patch.Probably it will work.It worked for me.
Ok there may be hope then. Just flashed the 44s modem then nandroided back to my CM11s then flashed modem again just in case lol. Don't recall seeing a proximity fix but it's ok as long as my cellular connectivity works, I'll deal w/ other issues later. Otherwise all I have is an expensive media player... lol it's booting up now so we'll see... *fingers crossed*
Nope didnt work...going to try a fresh CM12 install...
Trying to flash roms and in the wizards it always states I don't have a sim installed so I'm not sure it's my modem that's messed up or if it's something else related to hardware related to the sim. The sim itself works in my other phone... tried a different sim and it's still emergency calls only. don't know what to do now. doing all this and it's still not working so I doubt even the fastboot restore would work... might just have to rma... which would probably take 4eva...
Pls flash your nandroid backup which gave you the imei first,after gain your imei ,back up it,then you can flash what rom you like,if you dont have your imei,just flash your imei backup.The most important thing is to back up your efs.
Sent from my A0001 using XDA Free mobile app
Think my efs is fine as I can see the IMEI now but no matter what nandroid and fresh install I try, I can't get the cellular connectivity to work. I backed up all partitions just in case.
gqukyo said:
Think my efs is fine as I can see the IMEI now but no matter what nandroid and fresh install I try, I can't get the cellular connectivity to work. I backed up all partitions just in case.
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Click to collapse
Being able to see your IMEI doesn't necessarily mean your EFS is ok.
Transmitted via Bacon
Well tried the persist.img but that didn't work so what else can I do?
The one thing that would definitely fix your issues would be if you had an EFS backup. I don't know why people don't do this. Without that I have no idea what you can do.
Transmitted via Bacon
Never had that issue before and I've own android phones from the HTC Hero. Lesson learned though, thankfully it's still under warranty and it's not that expensive a phone...
gqukyo said:
Never had that issue before and I've own android phones from the HTC Hero. Lesson learned though, thankfully it's still under warranty and it's not that expensive a phone...
Click to expand...
Click to collapse
Not all Android phones employ an EFS partition. I'd never heard of it before this phone but a bit of research on my part revealed the importance of an EFS backup.
Transmitted via Bacon
That would make sense then. As I was reading about EFS, seems like it was mostly Samsung phones. I guess I can try a fastboot restore... nothing else to lose. lol
Doh! apparently there is something to lose when fastboot restoring... phone stopped booting back up correctly after a few fastboot restores and now it won't even turn back on... lovely... at least I had a expensive android media player before, now I have a brick... lol
Edited - Sorry
I have the same issue with all verisons of CM12. I get No service. Although the XNPH44S radio was the best. Meaning I could atleast see 3-4 bars for about 1 second and then off for a couple of minutes and then back on again for 1 second and so on. I believe it is a problem with not having a proper radio. One plus should release a better working radio in my opinion. I am on PTEL Mobile network (uses T-Mobile). So until we get a good working version of the radio I think some people like us are stuck on cm11.

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