Lost IMEI and No Sim error - Nexus 6P Q&A, Help & Troubleshooting

So I've been on the PureNexus rom since I got my phone last week and all has been great. Decided the flash Francisco's Kernel in which I needed to move to a systemless supersu. Did all that and the phone worked great until I kept getting a Google Play Services error. Tried to flash the PureNexus rom back over to get rid of the error and now I have lost my IMEI which seems to be why I have a "No Sim" error and lack of data.
I made a backup of my EFS partition using THIS guide and restored it through TWRP, however, no IMEI is being displayed. Backed up everything on my phone just in case but any thoughts on what I should do to recover?
Any help will be greatly appreciated! Thank you in advance.
Edit: Just to make sure there was no issue with my sim, I tried another one that was verified to be working and no success.

Factory restore and re flashing the bootloader took care of this exact problem for me. I have no idea how or why that happened, but it worked.

danhespen said:
Factory restore and re flashing the bootloader took care of this exact problem for me. I have no idea how or why that happened, but it worked.
Click to expand...
Click to collapse
I did the same and it worked! Thank you

ayuda
danhespen said:
Factory restore and re flashing the bootloader took care of this exact problem for me. I have no idea how or why that happened, but it worked.
Click to expand...
Click to collapse
necesito ayuda con mi nexus 6p

ingvictoralfonso920 said:
necesito ayuda con mi nexus 6p
Click to expand...
Click to collapse
What kind of problem do you have?
Anyway, you have to talk english here, not spanish.

too easy just try this
https://androidfilehost.com/?fid=817550096634743233
flash it and all okay
for every efs and imei and sim card problems
thanx to sapnnaaaa

Tyson568 said:
too easy just try this
https://androidfilehost.com/?fid=817550096634743233
flash it and all okay
for every efs and imei and sim card problems
thanx to sapnnaaaa
Click to expand...
Click to collapse
unfortunately it still does not work for me, the radio stays off on my device. without service and does not recognize the chip :chorando:

leanderson30 said:
unfortunately it still does not work for me, the radio stays off on my device. without service and does not recognize the chip :chorando:
Click to expand...
Click to collapse
try going to stock flash
and try again..........

leanderson30 said:
unfortunately it still does not work for me, the radio stays off on my device. without service and does not recognize the chip :chorando:
Click to expand...
Click to collapse
If turning lockscreen security off temporary and rebooting doesn't work do the above recommended flashing stock. Maybe backup your phone completey and wipe internal. This has never failed me many times with stubborn bugs.

Tyson568 said:
too easy just try this
https://androidfilehost.com/?fid=817550096634743233
flash it and all okay
for every efs and imei and sim card problems
thanx to sapnnaaaa
Click to expand...
Click to collapse
This is for Nexus 6P right? Can you tell me what is the best way to flash this file?

hkingpro said:
This is for Nexus 6P right? Can you tell me what is the best way to flash this file?
Click to expand...
Click to collapse
I was able to flash this, but I'm afraid my problem is a bit more... problematic.
What I did was copy that downloaded file to my phone then flash it through TWRP. This then creates some blank modemst1 & 2 files that you have to copy to your computer then send them back to the right partitions via fastboot command.
My problem, which I believe a lot of people are having is not just corrupted files, but the efs partition and baseband is corrupted. That's why we keep getting "no space" "permission denied" etc.
I'm able to "fastboot erase recovery" but no success for radio.
Still trying to figure this out.

Related

Need help to fix imei issue

In the beginning, i can use my note 3 n9005 SFR as usual. But once i tried flashing rom, it showed as error (fail) because I chose BL instead of AP. And i tried to fix it by follow the instructions as Mr. Firasusman suggest me as said in the this link http://forum.xda-developers.com/showthread.php?t=2614787. It solved the problem my phone can now get into the normal screen but i found a new problem. I put in sim card but there is no network signal and I also lost imei when i checked in phone status. What should I do to fix this problem? Anyone, please help me. Thanks a lot.
IMEI = Unknown
S/N change
Baseband ok
wittaya73 said:
In the beginning, i can use my note 3 n9005 as usual. But once i tried flashing rom, it showed as error (fail) because I chose BL instead of AP. And i tried to fix it by follow the instructions as Mr. Firasusman suggest me. My phone can now get into the normal screen but i found a problem. I put in sim card but there is no network signal and I also lost imei when i checked in phone status. What should I do to fix this problem? Anyone, please help me. Thanks a lot.
Click to expand...
Click to collapse
Check whether EFS folder is backed up by flashed rom in sdcard. If your lucky you can use backup file to get imei number back. Few posts also suggest that flashing back stock rom also get back imei. I am not sure of it. Better back up efs to your pc.
wittaya73 said:
In the beginning, i can use my note 3 n9005 SFR as usual. But once i tried flashing rom, it showed as error (fail) because I chose BL instead of AP. And i tried to fix it by follow the instructions as Mr. Firasusman suggest me as said in the this link http://forum.xda-developers.com/showthread.php?t=2614787. It solved the problem my phone can now get into the normal screen but i found a new problem. I put in sim card but there is no network signal and I also lost imei when i checked in phone status. What should I do to fix this problem? Anyone, please help me. Thanks a lot.
Click to expand...
Click to collapse
Are you in 4.3 or 4.4.2?
Sent from my SM-N9005 using Tapatalk
imapk said:
Check whether EFS folder is backed up by flashed rom in sdcard. If your lucky you can use backup file to get imei number back. Few posts also suggest that flashing back stock rom also get back imei. I am not sure of it. Better back up efs to your pc.
Click to expand...
Click to collapse
What is EFS? After My first flashed firmware, I couldn't get into the normal screen. I even tried to flash back with stock rom via odin, but failed everytimes. I've tried to get back stock rom by using kies, but no luck; and stuck in Odin mode when I turn on my phone.
Then I found this link http://forum.xda-developers.com/showthread.php?t=2614787 which help me able to turn on my phone to normal. But new issue come.
No network connection, and IMEI unknow.
Please suggest.
wittaya73 said:
What is EFS? After My first flashed firmware, I couldn't get into the normal screen. I even tried to flash back with stock rom via odin, but failed everytimes. I've tried to get back stock rom by using kies, but no luck; and stuck in Odin mode when I turn on my phone.
Then I found this link http://forum.xda-developers.com/showthread.php?t=2614787 which help me able to turn on my phone to normal. But new issue come.
No network connection, and IMEI unknow.
Please suggest.
Click to expand...
Click to collapse
Flash THIS And don't mess with your phone any more.
radicalisto said:
Flash THIS And don't mess with your phone any more.
Click to expand...
Click to collapse
Thanks for your reply.
Already did, but nothing change; imei still unknown.
wittaya73 said:
What is EFS? After My first flashed firmware, I couldn't get into the normal screen. I even tried to flash back with stock rom via odin, but failed everytimes. I've tried to get back stock rom by using kies, but no luck; and stuck in Odin mode when I turn on my phone.
Then I found this link http://forum.xda-developers.com/showthread.php?t=2614787 which help me able to turn on my phone to normal. But new issue come.
No network connection, and IMEI unknow.
Please suggest.
Click to expand...
Click to collapse
EFS is a folder in phone's file system which saves your phone model, IMEI number and lot more details, Important folder. Flashing ROM the efs folder got corrupted causing the loss of imei number. Try "radicalisto" reply and update the issue.
wittaya73 said:
Thanks for your reply.
Already did, but nothing change; imei still unknown.
Click to expand...
Click to collapse
Flash Stock ROM via ODIN then apply the fix.zip
radicalisto said:
Flash Stock ROM via ODIN then apply the fix.zip
Click to expand...
Click to collapse
I did what you told above, but nothing change. IMEI still unknow. I also noticed that S/N has been changed too.
Please advise.
Still need help, please.
radicalisto said:
Flash THIS And don't mess with your phone any more.
Click to expand...
Click to collapse
This fix never worked? - hmm,you have lost your EFS/IMEI somehow then. Does *#06# bring up an IMEI? - if not you'll have to search around for how to fix your IMEI (It can be done)
still need help here.

[Q] insert sim card to access network services

I got this message after updating to android 4.4.4.
What could be causing this?
term44 said:
I got this message after updating to android 4.4.4.
What could be causing this?
Click to expand...
Click to collapse
Hi check your IMEI see if it is correct...
Could be the wrong modem or a bad EFS do you have an EFS folder back up
MAX 404 said:
Hi check your IMEI see if it is correct...
Could be the wrong modem or a bad EFS do you have an EFS folder back up
Click to expand...
Click to collapse
Checked the IMEI, it is ok.
term44 said:
Checked the IMEI, it is ok.
Click to expand...
Click to collapse
If is not hardware, chances are that the efs folder is corrupted.
Try a different kernel
Try a different modem
Flash full wipe custom rom again..
Last flash stock rom...
If all fails the problem most like it is in the efs folder, if you have a backup restore it
MAX 404 said:
If is not hardware, chances are that the efs folder is corrupted.
Try a different kernel
Try a different modem
Flash full wipe custom rom again..
Last flash stock rom...
If all fails the problem most like it is in the efs folder, if you have a backup restore it
Click to expand...
Click to collapse
would try that all, but the phone refuses to connect to pc now, so i can not transfer the files... any suggestions?
it says that device driver did not install properly. i have installed kies in order to push drivers to my pc, but still same.
term44 said:
would try that all, but the phone refuses to connect to pc now, so i can not transfer the files... any suggestions?
it says that device driver did not install properly. i have installed kies in order to push drivers to my pc, but still same.
Click to expand...
Click to collapse
De install drivers and install them again , try another usb port , make sure kies is not activated
MAX 404 said:
De install drivers and install them again , try another usb port , make sure kies is not activated
Click to expand...
Click to collapse
just done that and still cant connect. however odin detects the phone, which is good :=) so i will install stock rom.
hopefully that will solve the problem with the sim card..
term44 said:
just done that and still cant connect. however odin detects the phone, which is good :=) so i will install stock rom.
hopefully that will solve the problem with the sim card..
Click to expand...
Click to collapse
restoring to stock rom solved the problem
term44 said:
restoring to stock rom solved the problem
Click to expand...
Click to collapse
Glad is working mate
Back up before you do anything else do not forget to backup the efs folder
Sent from my Nexus 7 using XDA Premium 4 mobile app
same issue.
I have the same issue as described by the op.
I flashed back to official 4.4.2 and the problem persist.
IMEI number is correct.
IMEISV is 01
Ive been trying to fix this for over a week to no avail. Losing my mind. Is there anything else you can suggest to fix this issue?
Phone is an i9500.
Was really hoping for some help by now. This will be the second time ive posted to this site in the 2 years ive been here with zero responses.
As a side note. I wanted to add that at the same time i started having the "not registered on network" error my sd card stopped being read by the phone also. I replaced the sim/sd holder in the phone itself hoping this would fix both issues but it has obviously not. Still not reading the sd. Says its blank or unrecognized file system. When i try to format it it doesn nothing. This is the sd I had in the phone before having issues. It worked fine then.
The phone just suddenly stopped working one morning. I used it to send a couple text and make a call, next time i picked it up "not registered" issue began. No changes to the phone in between those times.
I figured I would add this info in hopes of gaining a response.
Thanks.

[Q] [i9505] Galaxy S4 Baseband and IMEI: Unkown

Hi,
I've been having problems with my 4 month old GS4 lately, mainly because I was not able to make or receive calls and texts. I looked up my problem, and eventually traced it down to a unknown baseband and IMEI problem. Sure enough, my baseband and IMEI was missing. I researched and found out that you need to backup your EFS folder as it may have been corrupted, unfortunately I was not able to do so. I even tried factory resetting my phone to stock TouchWiz, hearing reports that a hard reset can fix the problem; unfortunately, I'm still missing my IMEI and Baseband. All help is appreciated
This Phone was/is rooted, and has been flashed several times with custom ROMS.
Thank you in advance.
If the problem started without you flashing or doing anything else, then you have a hardware failure. Your emmc chip is probably broken. Bring it to a service center.
Lennyz1988 said:
If the problem started without you flashing or doing anything else, then you have a hardware failure. Your emmc chip is probably broken. Bring it to a service center.
Click to expand...
Click to collapse
I'm not so sure really. I flashed Cyanogenmod and it was working fine, I could make and receive calls. However, my SIM card died and I had to replace it. That was when I noticed the problem.
EDIT: Okay, I failed to read completely. I kept reflashing nandroid backups however, after experiencing problems unrelated to this.
HeadhuntrActual said:
I'm not so sure really. I flashed Cyanogenmod and it was working fine, I could make and receive calls. However, my SIM card died and I had to replace it. That was when I noticed the problem.
EDIT: Okay, I failed to read completely. I kept reflashing nandroid backups however, after experiencing problems unrelated to this.
Click to expand...
Click to collapse
Try using root explorer and see if your efs folder is ok?
Old_Geezer said:
Try using root explorer and see if your efs folder is ok?
Click to expand...
Click to collapse
How do I know if it is okay??? P.S. I can't find certain files like nv_data.bin... sign of corruption?
HeadhuntrActual said:
How do I know if it is okay??? P.S. I can't find certain files like nv_data.bin... sign of corruption?
Click to expand...
Click to collapse
It might be, since my efs folder have nv_data.bin but i can't tell for sure since i'm still a newbie here.
Did you try searching for efs backup on the phone? I know some roms do automatic backup after flash so it might be left there somewhere.
HeadhuntrActual said:
I'm not so sure really. I flashed Cyanogenmod and it was working fine, I could make and receive calls. However, my SIM card died and I had to replace it. That was when I noticed the problem.
EDIT: Okay, I failed to read completely. I kept reflashing nandroid backups however, after experiencing problems unrelated to this.
Click to expand...
Click to collapse
I don't understand what you are saying.
When did your problem start? Did you do anything or did it happen without you doing anything.
Old_Geezer said:
It might be, since my efs folder have nv_data.bin but i can't tell for sure since i'm still a newbie here.
Did you try searching for efs backup on the phone? I know some roms do automatic backup after flash so it might be left there somewhere.
Click to expand...
Click to collapse
I tried, there was none unfortunately, I also flashed back to stock twice. If there was, it was probably wiped.
Lennyz1988 said:
I don't understand what you are saying.
When did your problem start? Did you do anything or did it happen without you doing anything.
Click to expand...
Click to collapse
I can't say for sure. My IMEI and Baseband was visible when I was running CM11. My SIM died eventually, so I had 0 service after that for about a week. During this time, I flashed AntaresOne's Unofficial cm12 5.0. Maybe it was corrupted when I flashed it? Anyway, My efs folder appears to be missing files aswell. I can't seem to find nv_data.bin perhaps my efs folder really is corrupted?

A2017G @B08 -> no network connection

Hi!
Really need your help
I flashed my phone and sold it.
Now customer claimed no network connection and sent it back.
Today I checked the phone and saw, that no IMEI were present.
I restored the IMEI, but there is no network connection.
I flashed the OEM ZTE image and have no clue what else could help.
Any idea?
Is this maybe MODEM related?
Sui77 said:
Is this maybe MODEM related?
Click to expand...
Click to collapse
Yeah, just flash the corresponding modem file
Choose an username... said:
Yeah, just flash the corresponding modem file
Click to expand...
Click to collapse
Flashed the A2017G-N-Modem ---> No success
Sui77 said:
Flashed the A2017G-N-Modem ---> No success
Click to expand...
Click to collapse
I don't know. Maybe a screenshot or two of *#*#4636#*#* would be helpful. This is a shot in the dark though

			
				
Are you 100% sure it is a a2017g?
joaste said:
Are you 100% sure it is a a2017g?
Click to expand...
Click to collapse
Was bevore flashing and was brandnew, sticker states also A2017G
joaste said:
Are you 100% sure it is a a2017g?
Click to expand...
Click to collapse
well that's also something worth looking, just see on the back of the phone if it says a2017g. i just assumed you would be sure
Sui77 said:
Was bevore flashing and was brandnew, sticker states also A2017G
Click to expand...
Click to collapse
I would try reflashing the modem, making sure you're using the latest twrp 3.1.1 and that system is mounted before flashing.
joaste said:
I would try reflashing the modem, making sure you're using the latest twrp 3.1.1 and that system is mounted before flashing.
Click to expand...
Click to collapse
No success
I think there is an issue with the IMEI.
I have restored them, but maybe still broken
Sui77 said:
No success
I think there is an issue with the IMEI.
I have restored them, but maybe still broken
Click to expand...
Click to collapse
Sorry. Can't help you there. I have no experience with restoring IMEIs and resulting issues.
Good luck.
my baseband is another
i use an A2017G stock
https://www.pic-upload.de/view-34346603/Screenshot_2017-11-22-11-27-05.jpg.html
I sometimes get problems just after flashing, and GSM/Wifi 5Ghz take up to 5 minutes to initialize. Deactivating and reactivating the sim card helps. Did u try that?
- Else, I'd get a 7.1.1 factory image and start over, that baseband is *exactly* the same as mine and I only have that "5-minutes-without-wifi-and-network" bug.
- Try looking for wifi just after booting the phone : if you only see 2.4Ghz networks and no 5Ghz network, just turn the sim car off and on, and it's ok, just that bug.
reflash a full stock firmware, if you have imei, you must have then, then if you want, do the process again to get twrp
Hi Folks,
i've done some reading and my problem is a broken EFS sector due to TWRP recovery.
Even after manual IMEI restore, the EFS is broken and causes the no service issue:
https://forum.xda-developers.com/axon-7/how-to/investigation-recovering-efs-twrp-t3522171
Only option is to get a EFS copy from another device, push it on my one and change the IMEI to my own manually.
If efs was ’restored’ using the signed twrp used for unlocking then there is no fix for that.

Infinite bootloop post-install december version

My mobile was updated with the December version and since then I have infinite bootloops
I've reinstalled the November version with myFlash but I'm still the same. I tried with tprw but i have some errors with the /cache partition
Can anybody help me?
Thanks
what december version?
ludditefornow said:
what december version?
Click to expand...
Click to collapse
7.12.7_7.1, after that, my movile bootloop every 30 secons more or less
Now, when i turn the mobile on, it tells me that the SIM is blocked, but I tried the SIM in another mobile and it works
A/B partition are there so if device is stuck in bootloop it should boot from dormant partition.
You have to flash stock firmware.
Try flashing the persist.img from every build that exists till now. If you manage to flash one of them the issue will be fixed. I've tested it myself.
cafernan said:
My mobile was updated with the December version and since then I have infinite bootloops
I've reinstalled the November version with myFlash but I'm still the same. I tried with tprw but i have some errors with the /cache partition
Can anybody help me?
Thanks
Click to expand...
Click to collapse
Please just follow the guide here to get it fixed: https://forum.xda-developers.com/mi-a1/how-to/ota-official-fastboot-image-n2g47h-7-12-t3728929
As it includes all necessary scripts for proper flashing it is secure to use
In worst case, you can also use the appropriate included script to factory reset at the same time when flashing. If nothing else helps, that should do the trick for you
Edwin Hamal said:
Try flashing the persist.img from every build that exists till now. If you manage to flash one of them the issue will be fixed. I've tested it myself.
Click to expand...
Click to collapse
I tried flashing persist.img, and it works!!!
Now I have 2 differents problems.
When I start my mobile, the SIM Pin page shows the message SIM CARD IS LOCKED - NO SERVICE. My sim works in another mobile
When I pu my pin, I get the message "preparing sdcard - Solving errors"
Please just do a full clean flash as recommended by me earlier and your issue should be gone. At least if they are firmware or software related.
After that do a clean flash and that issue should be fixed.
Edwin Hamal said:
After that do a clean flash and that issue should be fixed.
Click to expand...
Click to collapse
Excuse me. What do you want to say with "do a clean flash"?
Follow the guide I linked for you above. You have to use the flash_all script. So please have a look and give it a try.
Edwin Hamal said:
After that do a clean flash and that issue should be fixed.
Click to expand...
Click to collapse
Dont't works
It shows the same message SIM CARD IS LOCKED - NO SERVICE
Any help?
cafernan said:
Dont't works
It shows the same message SIM CARD IS LOCKED - NO SERVICE
Any help?
Click to expand...
Click to collapse
Shooting blindly here.
Have you tried another sim in your phone.
If another sim card works then have you tried changing your sim from carrier. It's easy.
Have you also tried a factory reset?
majamee said:
Have you also tried a factory reset?
Click to expand...
Click to collapse
Yes, and I flash boot and persist too. I think that it's possible a error with any .img inside my phone, but i don't now ...
My phone show me the page with de SIM Pin. I put the correct Pin, and after that phone don't connect with the network. I can't call because it's without service.
I tried the same SIM in another phone and it works. I tried diferents sim in my phone and all of them fail
Please, someone has any idea about what I need to do
Thanks
cafernan said:
Yes, and I flash boot and persist too. I think that it's possible a error with any .img inside my phone, but i don't now ...
My phone show me the page with de SIM Pin. I put the correct Pin, and after that phone don't connect with the network. I can't call because it's without service.
I tried the same SIM in another phone and it works. I tried diferents sim in my phone and all of them fail
Please, someone has any idea about what I need to do
Thanks
Click to expand...
Click to collapse
Have you tried the script to flash the full stock rom flash_all from https://forum.xda-developers.com/mi-a1/how-to/ota-official-fastboot-image-n2g47h-7-12-t3728929 here as well? If you only flashed the persist.img until now, you should give it a try.
majamee said:
Have you tried the script to flash the full stock rom flash_all from https://forum.xda-developers.com/mi-a1/how-to/ota-official-fastboot-image-n2g47h-7-12-t3728929 here as well? If you only flashed the persist.img until now, you should give it a try.
Click to expand...
Click to collapse
Thanks majamee but I flash all with MiFlash and it doesn't work, this isn't the problema
Finally I checked my IMEI and I discovered that it's 0.
Someone knows how can I recovery the phone's IMEI
Thanks
cafernan said:
Thanks majamee but I flash all with MiFlash and it doesn't work, this isn't the problema
Finally I checked my IMEI and I discovered that it's 0.
Someone knows how can I recovery the phone's IMEI
Thanks
Click to expand...
Click to collapse
http://lmgtfy.com/?q=qualcomm+recover+imei

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