No signal after unrooting - Nexus 4 Q&A, Help & Troubleshooting

So i rooted my nexus 4, and noticed that there is an unlocked lock thing beneath the splash screen when it boots up, didnt notice it before so i decided to unroot, using fastboot oem lock. Then when my phone started it wouldnt get any signal at all, no 3g 2g HSPA nothing. And it wont connect to wifi either. The wifi would turn on and when i try to connect to a network, it would cycle between obtaining ip adress and authenticating, but wouldnt connect. I dont know what to do? i tried factory resetting, unlocking the bootloader, locking it again, rebooting the phone countless times, but nothing would connect. I dont know whats wrong with it.
P.S. bluetooth is working fine if that makes a diffrence

Reset the radio? Although I don't see how a factory reset wouldn't have done that. *#*#4636#*#* and select reset
Sent from my Nexus 7 using xda app-developers app

im trying but clicking turn off radio does nothing
hoponpop said:
Reset the radio? Although I don't see how a factory reset wouldn't have done that. *#*#4636#*#* and select reset
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse

If it makes a diffrence it says baseband version unknown in the phone info page. and the imei number is also unknown
Fouad1013 said:
im trying but clicking turn off radio does nothing
Click to expand...
Click to collapse

Ok so i fixed it, i downloaded the official 4.2.1 stock image from google and flashed it using the Nexus 4 toolkit, and its working fine now. Idk what the problem is, but its fixed now. Thanks for your help
hoponpop said:
Reset the radio? Although I don't see how a factory reset wouldn't have done that. *#*#4636#*#* and select reset
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse

Fouad1013 said:
So i rooted my nexus 4, and noticed that there is an unlocked lock thing beneath the splash screen when it boots up, didnt notice it before so i decided to unroot, using fastboot oem lock. Then when my phone started it wouldnt get any signal at all, no 3g 2g HSPA nothing. And it wont connect to wifi either. The wifi would turn on and when i try to connect to a network, it would cycle between obtaining ip adress and authenticating, but wouldnt connect. I dont know what to do? i tried factory resetting, unlocking the bootloader, locking it again, rebooting the phone countless times, but nothing would connect. I dont know whats wrong with it.
P.S. bluetooth is working fine if that makes a diffrence
Click to expand...
Click to collapse
The unlock icon indicates a unlocked bootloader. I started seeing it in mine after unlocking, but don't have any issues as a result of that.
IAC, your lack of signal is not due to the unlocked bootloader, go ahead and do it again!

Hmm, this could be worthy of further investigation if others get it - it's exactly what would happen on Samsung devices when they lose their IMEI and Serial number. This exact scenario happened on my SGS2 before I knew I needed to back up the EFS stuff.

Related

I messed up while rooting (not bricked).

Hey guys,
I have a 32B my touch 3g and I was following http://theunlockr.com/2010/04/26/how-to-root-the-htc-mytouch-3g/ this guide to root. I flashed the sappimg.npg to go from 1.6 -> 1.5. The problem is, I can't seem to activate the phone! When I turn on the phone after the flash, I get to the http://techblog.aasisvinayak.com/wp-content/uploads/2009/09/device22.png Touch android to activate screen. The sim that I'm using does have a data plan. I used the sim in my roomates phone and he is able to get on the internet.
When I type in my google info, it tries to connect to the server, but fails and I get this error:
"Can't establish a reliable data connection to the server.
This could be a temporary problem or your SIM card may not be proivisioned for data services. If it continues, callCustomer Care."
Click to expand...
Click to collapse
Anyone have any clue where I should go from here?
CarlinT said:
Hey guys,
I have a 32B my touch 3g and I was following http://theunlockr.com/2010/04/26/how-to-root-the-htc-mytouch-3g/ this guide to root. I flashed the sappimg.npg to go from 1.6 -> 1.5. The problem is, I can't seem to activate the phone! When I turn on the phone after the flash, I get to the http://techblog.aasisvinayak.com/wp-content/uploads/2009/09/device22.png Touch android to activate screen. The sim that I'm using does have a data plan. I used the sim in my roomates phone and he is able to get on the internet.
Anyone have any clue where I should go from here?
Click to expand...
Click to collapse
Just skip that step and activate your wifi. After you activate wifi then connect to a wifi network and sign in with your gmail account. I've encountered this problem when I've flashed a new rom. I guess when you flash a new rom you disconnect from the network so you don't have data for a bit. Don't worry your phone will automatically connect and keep a stable connection eventually. Just be patient.
I can't connect to wifi, I'm still using the stock ROM.
What? You can't connect to wifi using the stock rom?
cedeel said:
What? You can't connect to wifi using the stock rom?
Click to expand...
Click to collapse
Unfortunately not =/
That doesn't make sense. You should be able to use wifi even with the stock rom. I'm not sure why you can't sign into wifi with the stock rom. Just try signing in a couple times and eventually it'll ask you if you want to sign in later. Then just click yes. After that connect to a wifi network and sign in from there.
The only way to register your handset is through cellular data I don't think there's away around that if your root process was successful I'd suggest trying a different rom or wiping and trying again or let your phone set for awhile maybe its having trouble registering with the network this does happen so be patient
yearziro said:
The only way to register your handset is through cellular data I don't think there's away around that if your root process was successful I'd suggest trying a different rom or wiping and trying again or let your phone set for awhile maybe its having trouble registering with the network this does happen so be patient
Click to expand...
Click to collapse
I was in the process of rooting, but didn't get very far. I downgraded from 1.6 to 1.5, and thats when the data stopped working.
It seemed to registered, but no data is being downloaded =/
Sounds like a step was missed somewhere I would try wiping and starting from scratch and make sure your magic is a 32b an not a 32a also when yöu install your rom make sure its something stable for your version of magic
yearziro said:
Sounds like a step was missed somewhere I would try wiping and starting from scratch and make sure your magic is a 32b an not a 32a also when yöu install your rom make sure its something stable for your version of magic
Click to expand...
Click to collapse
I'm using the right steps for the right version of the phone. I haven't flashed any cooked roms yet, just the standard ol' stock one.

[Q] Booting stuck at "X" logo.

Today i noticed that my nexus lost gsm signal. Yestarday it was ok and i didnt change anything. So, I turned it off and then on, but it stuck. There is only nexus logo and nothing happens. I had stock android 4.3 with bootloader locked and stock recovery. I tried unlocking bootloader, flasing twrp and wipeing cache/dalvik/data but it didnt help. I even tried flashing PA, but it also stuck on boot logo. After that i tired full factory reset (system and recover) using WugFresh's toolkit, but it also didnt help. In stock recovery there is a red triangle with dead android. Do you have any idea what may be wrong?
adi011 said:
Today i noticed that my nexus lost gsm signal. Yestarday it was ok and i didnt change anything. So, I turned it off and then on, but it stuck. There is only nexus logo and nothing happens. I had stock android 4.3 with bootloader locked and stock recovery. I tried unlocking bootloader, flasing twrp and wipeing cache/dalvik/data but it didnt help. I even tried flashing PA, but it also stuck on boot logo. After that i tired full factory reset (system and recover) using WugFresh's toolkit, but it also didnt help. In stock recovery there is a red triangle with dead android. Do you have any idea what may be wrong?
Click to expand...
Click to collapse
You can try this one: Unbrick [bootloop] NEXUS 4 and flash Official 4.3 image [the easyest way]
I have already tried it, it didnt help. But i also tried 4.2.2 and it started after like 5 mins. It takes some time but it boots. But still, there is no gsm connection. I tried flashing diffrent radio but it didnt help. In settings/info there is unknown baseband and no imei. Is this possible that some hardware that is resposible for gsm is damaged?
Check your APN settings b
Sent from my Nexus 4 using Tapatalk 4
I bet it's not a problem with apn. When i try to search for gsm network there is an error.
Booting phone takes more than 5 minutes. It shouldnt happen on fresh system.
What is more, info in settings says that there is unknown baseband and unknown imei.
Logcat: pastebin.com/cUMbRaCt
Log above is done without sim card, but it doesnt work even if sim card is inside.
This lane is important I think:
Code:
SCREEN_STATE error: com.android.internal.telephony.CommandException: RADIO_NOT_AVAILABLE
I would try a full factory image restore with data wipe. That might help. If not... May be RMA time. Remember to use fastboot!
Sent from my Nexus 4 using Tapatalk 4
adi011 said:
I bet it's not a problem with apn. When i try to search for gsm network there is an error.
Booting phone takes more than 5 minutes. It shouldnt happen on fresh system.
What is more, info in settings says that there is unknown baseband and unknown imei.
Logcat: pastebin.com/cUMbRaCt
Log above is done without sim card, but it doesnt work even if sim card is inside.
This lane is important I think:
Code:
SCREEN_STATE error: com.android.internal.telephony.CommandException: RADIO_NOT_AVAILABLE
Click to expand...
Click to collapse
Hi I just met the exactly the same problem you described: woke up and found no signal there, and after a bunch of flash things I noticed that the IMEI is gone. All these happened in 1 week after I actually received the phone.
BTW, can you use WIFI and Bluetooth now? Mine is still OK, only IMEI shows 'unknown'.
Hope someone could come up with a solution.
Hi I just met the exactly the same problem you described: woke up and found no signal there, and after a bunch of flash things I noticed that the IMEI is gone. All these happened in 1 week after I actually received the phone.
BTW, can you use WIFI and Bluetooth now? Mine is still OK, only IMEI shows 'unknown'.
Hope someone could come up with a solution.
Click to expand...
Click to collapse
I didnt check bluetooth, but wifi works fine. Your problem looks same as mine. It happened 2 weeks after I recieved my nexus.
I would try a full factory image restore with data wipe. That might help. If not... May be RMA time. Remember to use fastboot!
Click to expand...
Click to collapse
I have already done full factory image restore. The problem is that there is no RMA in my country, the phone was imported from UK.
adi011 said:
I didnt check bluetooth, but wifi works fine. Your problem looks same as mine. It happened 2 weeks after I recieved my nexus.
I have already done full factory image restore. The problem is that there is no RMA in my country, the phone was imported from UK.
Click to expand...
Click to collapse
I recently faced this problem -- booted into recovery and flashed android 4.2.3, still had the issue. did a factory reset which actually wiped nada on the sdcard and as golden after that, re-rerooted and all.
adi011 said:
Today i noticed that my nexus lost gsm signal. Yestarday it was ok and i didnt change anything. So, I turned it off and then on, but it stuck. There is only nexus logo and nothing happens. I had stock android 4.3 with bootloader locked and stock recovery. I tried unlocking bootloader, flasing twrp and wipeing cache/dalvik/data but it didnt help. I even tried flashing PA, but it also stuck on boot logo. After that i tired full factory reset (system and recover) using WugFresh's toolkit, but it also didnt help. In stock recovery there is a red triangle with dead android. Do you have any idea what may be wrong?
Click to expand...
Click to collapse
Could be a motherboard problem.
Sent from my GT-P7510 using xda app-developers app
If your imei is wiped you are screwed. The network won't allow you to use it. Your phone is illegal without an IMEI no. I got a Chinese one that had no number
Sent by mobile telephone.
shall emohig
howard bamber said:
If your imei is wiped you are screwed. The network won't allow you to use it. Your phone is illegal without an IMEI no. I got a Chinese one that had no number
Sent by mobile telephone.
Click to expand...
Click to collapse
Well, I had an imei before it happned and I still have it written on sim tray. I hope that if I bring it to repair center, it will be fixed.

[Q] At&t galaxy s4 no wifi or data problem "Please help"

atat s4 unlock with tmobile sim
I cant seem to get no wifi or data working, even before the unlock the wifi still didnt work and with my atat sim in only data was at least working.
"Wifi works in my house, every other device i have connects to it"
I've done factory reset but no help so was thinking about flashing would that solve anything?
Any help and advice would be much thankful!
? help any1
booming1 said:
atat s4 unlock with tmobile sim
I cant seem to get no wifi or data working, even before the unlock the wifi still didnt work and with my atat sim in only data was at least working.
"Wifi works in my house, every other device i have connects to it"
I've done factory reset but no help so was thinking about flashing would that solve anything?
Any help and advice would be much thankful!
Click to expand...
Click to collapse
any1 help please
flashing? maybe
booming1 said:
any1 help please
Click to expand...
Click to collapse
Well, I had the same problem with my s3. I did a factory reset, and it worked. Try flashing the stock rom again, and be brave because you might lose your phone from not flashing right.
MANATHI said:
Well, I had the same problem with my s3. I did a factory reset, and it worked. Try flashing the stock rom again, and be brave because you might lose your phone from not flashing right.
Click to expand...
Click to collapse
check your apn settings for your provider
i check and edit the apn setting n now data works perfectly but wifi still doesnt connect... i dont get it
try turning airplane mode on then off
you don't say if you are rooted with any custom recovery/rom or your build version

WiFi passwords forgotten after reboot

I don't know if this topic has already been covered. I didn't see it in a wick scan of the forum.
My S5 won't remember Wi-Fi passwords after I reboot. As long as I don't reboot, I can go from location to location and it automatically connects to wireless networks that I've connected to. But if I reboot, it makes me enter the password again.
Has anyone else had this issue? If so, us there a known fix?
I am rooted. I have tried forgetting networks and commenting to them again. As soon as I reboot, it's like I never connected to any networks. I have to reenter all wireless passwords.
I had the wifi password issue and battry life sucked. I cleared cache partition, the reflashed the ni2 firmware from here
http://forum.xda-developers.com/showthread.php?t=2842069
and now my phone "issues" are gone.
And my phone is back to lasting over a day.
didureboot said:
I don't know if this topic has already been covered. I didn't see it in a wick scan of the forum.
My S5 won't remember Wi-Fi passwords after I reboot. As long as I don't reboot, I can go from location to location and it automatically connects to wireless networks that I've connected to. But if I reboot, it makes me enter the password again.
Has anyone else had this issue? If so, us there a known fix?
I am rooted. I have tried forgetting networks and commenting to them again. As soon as I reboot, it's like I never connected to any networks. I have to reenter all wireless passwords.
Click to expand...
Click to collapse
I think you didn't flash the new Modem that go with your ROM
Explain?
I followed the destructions to the letter
Yeah this happened to me make sure that the rom you are flashing matches the firmware u are on. ie if u are on ni2 make sure u don't flash an nc2 rom vice versa.
didureboot said:
I followed the destructions to the letter
Click to expand...
Click to collapse
well theres your problem.. you destroyed it lol jk
but seriously.. what rom are you on and what firmware.. look in about phone in settings and let us know what you see there
Sent from my SM-G900V using XDA Free mobile app
elliwigy said:
well theres your problem.. you destroyed it lol jk
but seriously.. what rom are you on and what firmware.. look in about phone in settings and let us know what you see there
Sent from my SM-G900V using XDA Free mobile app
Click to expand...
Click to collapse
I finally made another attempt at fixing it. I ended up restoring the phone to stock with odin and going through the whole root/update process. Its all good now.
Thanks for everyones advice and help

No sim at start, no network, IMEI is ok

Hello there,
I undertook to unlock the bootloader of my xperia x compact, of course without saving anything (bye the DRM keys), I then used the fastboot to install Paranoid Android v7.2.3, success after the second attempt.
So the phone started very well, but no SIM card recognized at the start of the phone. Possibly PIN code appeared after 10 min of ignition, loop on the "unlocking in progress" and then nothing, no network.
I have been back several times on the official rom via Sony Companion without success. Last night I tried to flash a rom stock with Flashtool. The operation was going well and oh miracle the sim card was detected directly, so I'm configuring the phone and installing all my applications, a reboot after all that and the SIM card had disappeared again.
Since I tried Flashtool several times without success, downgrade to 6.0.1 either.
After hours and hours of research I still do not have the solution, I have crossed several times on forums for the same kind of symptoms but always accompanied by an absent IMEI, but when I type *#06# my IMEI is displayed correctly .
If someone has already encountered this kind of problem I would love to talk to him. Thanks for reading me
Good night
PS: In other bug, the options for developers who freeze or the camera that does not take a picture (freeze when I want to take a picture)
PS2: sorry for my english guys
Did you select your APN under mobile networks
Sent from my F5321 using Tapatalk
9h0s7 said:
Did you select your APN under mobile networks
Sent from my F5321 using Tapatalk
Click to expand...
Click to collapse
Yes I have selected my APN, edited as my carrier said. The biggest problem is that the sim card is not detected immediately at startup. And when the sim lock pop up (about 5min after starting the phone) validation of the pin code is much too long to be normal. The code is accepted but I have no network, and when I try to search manually in the settings I have a loop on 'searching'. I think the problem comes from the modem / radio but I do not know too much these points, I just follow tutorials on the internet.
I say start from scratch but use Flashtool
Sent from my F5321 using Tapatalk
I've already started from scratch with flashtool, several times ...
Some news of my problem.
I have since tried several times to change rom, to flash the modem / radio.
Now my sim card is recognized, but still no network. I have wrote my APN correctly but still nothing.
The network appeared only once after the installation of Paranoid Android, but as in my previous post, after a mobile reboot nothing.
Namely that in the phone information menu, line data service: Disconnected and in this menu enable data connection does not change anything (I can't even enable it). Select radio band gives me 3 choices (Automatic, USA, Japan) and when I click on Automatic I get Set [Automatic] Unsuccessful.
If anyone can help me, I'm really starting to feel hopeless.
xooma37 said:
Hello there,
I undertook to unlock the bootloader of my xperia x compact, of course without saving anything (bye the DRM keys), I then used the fastboot to install Paranoid Android v7.2.3, success after the second attempt.
So the phone started very well, but no SIM card recognized at the start of the phone. Possibly PIN code appeared after 10 min of ignition, loop on the "unlocking in progress" and then nothing, no network.
I have been back several times on the official rom via Sony Companion without success. Last night I tried to flash a rom stock with Flashtool. The operation was going well and oh miracle the sim card was detected directly, so I'm configuring the phone and installing all my applications, a reboot after all that and the SIM card had disappeared again.
Since I tried Flashtool several times without success, downgrade to 6.0.1 either.
After hours and hours of research I still do not have the solution, I have crossed several times on forums for the same kind of symptoms but always accompanied by an absent IMEI, but when I type *#06# my IMEI is displayed correctly .
If someone has already encountered this kind of problem I would love to talk to him. Thanks for reading me
Good night
PS: In other bug, the options for developers who freeze or the camera that does not take a picture (freeze when I want to take a picture)
PS2: sorry for my english guys
Click to expand...
Click to collapse
Hi, i had the same problem. To enter the pin straight away simply go to the quick settings and check if you have the LTE tile there. If not add it. Then hold down on the LTE tile and it should open mobile data settings and then it takes about 5 seconds and it should ask for pin. I have no idea why it is like so but currently i am on paranoid android 7.3.1 and have no problems. Best wishes!
XperiaGUY47 said:
Hi, i had the same problem. To enter the pin straight away simply go to the quick settings and check if you have the LTE tile there. If not add it. Then hold down on the LTE tile and it should open mobile data settings and then it takes about 5 seconds and it should ask for pin. I have no idea why it is like so but currently i am on paranoid android 7.3.1 and have no problems. Best wishes!
Click to expand...
Click to collapse
Hi and thank you for your help
The situation has evolved since, the phone asks for the sim code directly but I still have no network. (see my last message)
Edit : Just noticed that i have an error in flashtool when flashing any rom "those data are not in fsc script and will be skipped reset kernel cmd debug, would you wish to continue ?
Someone ?
xooma37 said:
Some news of my problem.
I have since tried several times to change rom, to flash the modem / radio.
Now my sim card is recognized, but still no network. I have wrote my APN correctly but still nothing.
The network appeared only once after the installation of Paranoid Android, but as in my previous post, after a mobile reboot nothing.
Namely that in the phone information menu, line data service: Disconnected and in this menu enable data connection does not change anything (I can't even enable it). Select radio band gives me 3 choices (Automatic, USA, Japan) and when I click on Automatic I get Set [Automatic] Unsuccessful.
If anyone can help me, I'm really starting to feel hopeless.
Click to expand...
Click to collapse
Are you ticking the wipe boxes with flash tool
Sent from my F5321 using Tapatalk
9h0s7 said:
Are you ticking the wipe boxes with flash tool
Click to expand...
Click to collapse
Yes all boxes.
Here is my phone info
I can't manage to set radio on
Someone ?
Something similar happened to me recently and it was fixed by selecting my provider via wireless networks > mobile networks > service providers
In my case AT&T was selected when I chose Tmo and rebooted everything was fine. Good luck.
Sent from my F5321 using Tapatalk

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