A2017G @B08 -> no network connection - ZTE Axon 7 Questions & Answers

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.

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.

[HELP!] I think I messed up my EFS partition and I don't have a backup....

I was VERY stupid. I went back to stock Oxygen OS using a fastboot image and now if I dial #*06# the IMEI box shows up but no IMEI number is actually in the box it is just blank. I did post about this before but last time I didn't really know what happened I was asking if anyone could tell me what they thought happened. I am pretty sure I screwed up the EFS partition and I am just wondering what I need to do now. Is there some way I can repair it I mean I don't have a backup. Can I contact OnePlus support? I really need help.
ethanscooter said:
I was VERY stupid. I went back to stock Oxygen OS using a fastboot image and now if I dial #*06# the IMEI box shows up but no IMEI number is actually in the box it is just blank. I did post about this before but last time I didn't really know what happened I was asking if anyone could tell me what they thought happened. I am pretty sure I screwed up the EFS partition and I am just wondering what I need to do now. Is there some way I can repair it I mean I don't have a backup. Can I contact OnePlus support? I really need help.
Click to expand...
Click to collapse
Where did you find the fastboot file?
________
v7
XDA Assist
v7 said:
Where did you find the fastboot file?
________
v7
XDA Assist
Click to expand...
Click to collapse
I forgot where I found it from... do you know where he correct one is?
ethanscooter said:
I forgot where I found it from... do you know where he correct one is?
Click to expand...
Click to collapse
There's no official fastboot zip from the Oneplus.That's why I asked you.Did you find it from XDA?
__
v7
XDA Assist
v7 said:
There's no official fastboot zip from the Oneplus.That's why I asked you.Did you find it from XDA?
__
v7
XDA Assist
Click to expand...
Click to collapse
I forgot, honestly this happened a few weeks ago I tried looking through my history but I couldn't find it. How can I fix it?
EDIT: It wasn't from XDA for sure.
ethanscooter said:
I was VERY stupid. I went back to stock Oxygen OS using a fastboot image and now if I dial #*06# the IMEI box shows up but no IMEI number is actually in the box it is just blank. I did post about this before but last time I didn't really know what happened I was asking if anyone could tell me what they thought happened. I am pretty sure I screwed up the EFS partition and I am just wondering what I need to do now. Is there some way I can repair it I mean I don't have a backup. Can I contact OnePlus support? I really need help.
Click to expand...
Click to collapse
This happened to me a few times in the past, all I had to do was wipe dalvik and cache again and it came back. Not sure if it's the same issue but I would give it a shot. Just boot into recovery and wipe them again and see if it gets you back up and running.
_MetalHead_ said:
This happened to me a few times in the past, all I had to do was wipe dalvik and cache again and it came back. Not sure if it's the same issue but I would give it a shot. Just boot into recovery and wipe them again and see if it gets you back up and running.
Click to expand...
Click to collapse
I tried it and still nothing...
http://forum.xda-developers.com/showpost.php?p=62440352&postcount=21
first try this.
then, flash H2OS. (Oxygen Os won't work from that recovery so, H2OS. Later you can re-flash though)
(Try this first!!!)
EDIT: if that doesn't reset, try this.
http://forum.xda-developers.com/one...over-oneplus-2-to-t3269543/page2#post64303240
Official O2OS files.
krishna442 said:
http://forum.xda-developers.com/showpost.php?p=62440352&postcount=21
first try this.
then, flash H2OS. (Oxygen Os won't work from that recovery so, H2OS. Later you can re-flash though)
(Try this first!!!)
EDIT: if that doesn't reset, try this.
http://forum.xda-developers.com/one...over-oneplus-2-to-t3269543/page2#post64303240
Official O2OS files.
Click to expand...
Click to collapse
I cannot use that because my device is not hard bricked and it will not install the driver since I can enter the bootloader normally.
Not sure if you've seen this post its based on the post above but I think it just uses fastboot. Don't know if it will work for you, but figured it would be worth a shot.
http://forum.xda-developers.com/showpost.php?p=62973446&postcount=2
I tried using the tool and it did not work, I purposely hard bricked the device to try it and still no signal or imei. Another problem is WiFi takes about 4 minutes just to turn on but I can live with that I just want service.
Basically flashing back the stock should bring back the efs. Let's see if someone has a solution. Sorry!
EFS files are unique to each phone. If the EFS is corrupt or damaged, and there is no backup, I don't know of any way to fix it ;_; You can try OnePlus support but they aren't as dumb as carrier warranty or other phone manufacturers. They'll be more likely to know what you did.
It is possible to restore your imei number, I did it on my brothers lg g2. It requires some software for PC (I can't remember the name, you'll have to google it) and the box your phone came in with the imei number. It is possible, so don't lose hope!
EddyH1993 said:
It is possible to restore your imei number, I did it on my brothers lg g2. It requires some software for PC (I can't remember the name, you'll have to google it) and the box your phone came in with the imei number. It is possible, so don't lose hope!
Click to expand...
Click to collapse
Is it called QPST configuration? If so all I need help with is getting the phone to be recognized by the tool. Don't you need it to be on some COM port or something?
ethanscooter said:
Is it called QPST configuration? If so all I need help with is getting the phone to be recognized by the tool. Don't you need it to be on some COM port or something?
Click to expand...
Click to collapse
Yeh that software rings a bell and yeh I believe it's something like com port 47 maybe. It was a while ago when I did it and I can't remember the process of doing it :/
EddyH1993 said:
Yeh that software rings a bell and yeh I believe it's something like com port 47 maybe. It was a while ago when I did it and I can't remember the process of doing it :/
Click to expand...
Click to collapse
Don't I need a special driver? Also, do I need to put the phone into diag mode and how would I do that?
ethanscooter said:
Don't I need a special driver? Also, do I need to put the phone into diag mode and how would I do that?
Click to expand...
Click to collapse
Have a look at this link http://droidmodderx.com/galaxys3/?page_id=79 I really can't remember how I did it and without researching again I won't know. It's a rough idea to maybe help you, I think the device just needs to be in USB debugging mode. I can't help anymore sorry and good luck.
any fix for this yet?
Same problem also with my op2 . No imei no baseband

Lost IMEI and No Sim error

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.

No signal after restore with TWRP

Hello, I have a problem and I do not know how to solve it. On my Redmi 2TD dead immc memory, I ordered a new motherboard put it on, everything worked. I decided to restore a full archive made with TWRP - made with the old motherboard. Then I rebuilt my IMEI. Now I have sim card, but no signal and the settings are only 2G. It also sees satellites, but does not locate. Maybe I did not have to restore the system, just the data from the old motherboard ?
Has this problem solution ?
Sorry for my bad english
If you have problem with network signal it may have something to do with firmware/bootloader version. Try kitkat or lollipop. You can find on download section
dark_vader said:
If you have problem with network signal it may have something to do with firmware/bootloader version. Try kitkat or lollipop. You can find on download section
Click to expand...
Click to collapse
everything I've tried, fastboot roms, clean instalations - no effect, no signal
getzov said:
everything I've tried, fastboot roms, clean instalations - no effect, no signal
Click to expand...
Click to collapse
Jus Try and download stock fastboot rom for ur device. (i suggest miui 8 firmware) it solved my problem on 2014818.
jbanti said:
Jus Try and download stock fastboot rom for ur device. (i suggest miui 8 firmware) it solved my problem on 2014818.
Click to expand...
Click to collapse
All is tried, I think that problem is wrong IMEI

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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