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Network Connection Error

Alright, so I paid cellunlocker to unlock a new to me Note 3. Not blacklisted, everythings good on that end.
my IMEI shows as the correct number with two extra digits - not sure if thats my issue.
However I cannot connect to any mobile network. Well thats not true, I can see I'm connected to their tower but cannot get any phone calls, texts I just get the message on the screen.
I didn't back up my EFS partition, having 6 android phones so far all, rommed, and everything I never had to do that.
I understand its likely that this partition is messed up.
.. So how can I restore it?
I'm rooted, I'll install a recovery I don't mind any of that. however I do not have a backup of my EFS partition. Is there any way to extract this from a stock file?
Can I just use Kies or something to flash the entire software and restore this partition?
Seeking some guidance from the Note Experts.
Thanks,

KeirP said:
Alright, so I paid cellunlocker to unlock a new to me Note 3. Not blacklisted, everythings good on that end.
my IMEI shows as the correct number with two extra digits - not sure if thats my issue.
However I cannot connect to any mobile network. Well thats not true, I can see I'm connected to their tower but cannot get any phone calls, texts I just get the message on the screen.
I didn't back up my EFS partition, having 6 android phones so far all, rommed, and everything I never had to do that.
I understand its likely that this partition is messed up.
.. So how can I restore it?
I'm rooted, I'll install a recovery I don't mind any of that. however I do not have a backup of my EFS partition. Is there any way to extract this from a stock file?
Can I just use Kies or something to flash the entire software and restore this partition?
Seeking some guidance from the Note Experts.
Thanks,
Click to expand...
Click to collapse
- The extra 2 digits after the IMEI is the IMEISV. It is not the issue.
- The EFS partition is store inside your device, not in the stock firmware. Of course you can not extract it from the stock files.
- You can try to flash the entire stock firmware (using Kies or Odin). Sometime that may help to fix the problem.

Appears to be a case of delayed blacklist or something.
Didn't show up in any searches and not to my carrier, yet later now it does appear it is.
Now to return it to the carrier so they can get it back to the owner, and to track down the ass I bought it from.

[Q] Restore IMEI on N910F

I bought the N910F a few weeks ago. I'm traveling so I had it unlocked in Bangkok to use other Sim cards. That's when my problems began.
They rooted the phone and changed my IMEI number. The result is: Knox flag tripped, fingerprint sensor not working anymore (error), losing WiFi passwords (had to do ro.securestorage.support=false to fix it) and worst of all lag and bad battery life. I can't even watch a HD movie without lag. AnTuTu score 36000.
The efs folder is empty (not mounted). I have no backup of the folder. The phone functionality works fine. I got no problems with any Sim card. I have a valid imei, just the wrong one. I tried firmware installation and initialization with Kies, but it didn't change anything.
I'm traveling through Asia for many months so I can not get a replacement or send it in for repair at home in Europe.
Do you have an idea how I could get my original imei back? or how to mitigate the issues?

I had a very similar problem, I thought I was sunk. But then I found THIS post, I used the Edit 2 method and it worked a treat, hope you have similar luck. If you don't have TWRP, then I'd recommend you install it, can be a real lifesaver.

thanks for the link. it worked partially. I managed to mount the efs folder. the partition for n910f is mmcblk0p13! I used the terminal emulator on my rooted phone with busybox. no need to use recovery.
the bad thing thing is, I still don't have my original imei. the good thing is, my fingerprint sensor works again, I don't need the Wi-Fi fix with ro.securestorage. support=false and the phone feels much faster, less laggy now.
kinda happy with that. If I had the efs backup now....
would a initialization with Kies restore my original imei?

Sorry, I really can't say, I've never used Kies. Glad it seems to be running better now.
Should have mentioned the partition on a N910 is /dev/block/mmcblk0p13, getting old and forgetful, LOL.

That's a bummer OP - a non-factory unlock on newer Samsung phones involves writing another phone's hacked EFS data.
If the store didn't do a backup of your old modem data, your original IMEI is gone.
DO NOT attempt to use Qualcomm NV Tools to change your IMEI back to stock. (Guess how I wrecked my Note 3 the first time around!) - you need a valid IMEI Certificate to access 3G/LTE networks so you'll be stuck in 2G mode.
Samsung service centers have the tools to write any IMEI they want and generate the valid certificate, though it'll be expensive. I'd just advise OP to Odin to stock and wipe data, then root and disable ro.securestorage.support.
Having a wrong IMEI's not too bad, although a big no-no in terms of the GSM standard.

1) I think I have a valid certificate for my 'new' imei. Mobile data connections work fine and fast (H+). I prefer my original imei though.
2)why should I disable securestorage.support? It works fine enabled.

gattacus said:
1) I think I have a valid certificate for my 'new' imei. Mobile data connections work fine and fast (H+). I prefer my original imei though.
2)why should I disable securestorage.support? It works fine enabled.
Click to expand...
Click to collapse
As part of the unlocking process, they wrote a new (rather, copied from another phone) IMEI to your Note 4. It'll work just fine. However, the IMEI may be shared with other phones, and may one day be blacklisted. When/If that happens, you'll need to write a new IMEI again.
I think I didn't come across right the last time - don't try to change your IMEI to your original one with Qualcomm NV Tools without a matching, proper certificate for it. It's a world of hurt.
As for ro.securestorage.support, it _might_ be needed for keeping WiFi passwords saved on reboot. Or not. IIRC, my rooted Note 3 needed it set for WiFi and S-Health to work right. I'm staying unrooted on my Note 4, so I don't know if you'll still have to do that.

I will go to a service center and ask if they can restore my imei but it doesn't seem to be urgent now. I just hope that a kies install of lollipop doesn't bring back the problems (unmounted efs).
WiFi passwords survive a reboot without the fix. So far so good.
Thanks for your help.

rastus.rob said:
I had a very similar problem, I thought I was sunk. But then I found THIS post, I used the Edit 2 method and it worked a treat, hope you have similar luck. If you don't have TWRP, then I'd recommend you install it, can be a real lifesaver.
Click to expand...
Click to collapse
Your post helped me a lot. I just wanted to say that you made my day. THANK YOU!!!!!

you can use darkmed repair tools
gattacus said:
I bought the N910F a few weeks ago. I'm traveling so I had it unlocked in Bangkok to use other Sim cards. That's when my problems began.
They rooted the phone and changed my IMEI number. The result is: Knox flag tripped, fingerprint sensor not working anymore (error), losing WiFi passwords (had to do ro.securestorage.support=false to fix it) and worst of all lag and bad battery life. I can't even watch a HD movie without lag. AnTuTu score 36000.
The efs folder is empty (not mounted). I have no backup of the folder. The phone functionality works fine. I got no problems with any Sim card. I have a valid imei, just the wrong one. I tried firmware installation and initialization with Kies, but it didn't change anything.
I'm traveling through Asia for many months so I can not get a replacement or send it in for repair at home in Europe.
Do you have an idea how I could get my original imei back? or how to mitigate the issues?
Click to expand...
Click to collapse
you can use Darkmed S7 S7 Edge Imei Cert Repair Tool v.1.1.7 and I am sure, they will solve your problem.

allan maanson said:
you can use Darkmed S7 S7 Edge Imei Cert Repair Tool v.1.1.7 and I am sure, they will solve your problem.
Click to expand...
Click to collapse
This post is really old bruh ?
Sent from my SM-N910G using Tapatalk

Am Unable to Make calls on Note 4 SM-N910H

A friend tried root without without success on my Note4 SM-N910H Kitkat and I noticed my the imei became null. I managed to upgrade the firmware to Marshmallow but am still unable to make call or browse with the device.
It gives me "Not Registered To Network" error whenever I try registering the network via settings or even making calls.
Please what do I do?
Meanwhile I don't have any imei backup before it crashed.

Somebody should come to my aid please.

Since the IMEI number of your device has been erased, it will no longer be able to make calls. As your device needs an IMEI number in order for it to connect to a cellular network. You will have to figure out a way to restore the IMEI number to your device.

That's the problem. How do I figure out a way to restore imei on note4

find solution im also like you

Original packaging will have IMEI of the phone. You may be able to get IMEI from a phone that's no longer used. Good luck.

Sprint V20: Carrier Swap Help Requested (Post covers bootloader, ESN, everything)

Phone Information
Phone Number: Last owner shows up, want this cleared
Android Version: 7.0
Build Number: NRD90M
Software Version: LS997ZV6
Security software: MDF V2.0 release 4
OEM Unlock (On)
USB Debugging (On)
PROBLEM: A sprint V20 was brought to me to have the carrier swapped from [Sprint] to [Cricket]. So far sounds easy right? Read below...
Please Review the following of my step by step :
ESN IS LISTED AS CLEAR ON SWAPPA, please note that means this device "should" not have issues (first thing I checked)
Under APN settings there is no way to +add APN as there is with every other phone I have touched. Is this because it was a lease?
I considered perhaps rooting the phone, throwing on a custom ROM, and therefore hopefully having that added. Looks like bootloader is locked.
Of course, I am 1 security patch too late, DIRTYSANTA will NOT work on my firmware.
Searched everywhere, seems as though you CAN NOT roll this back.
Next I looked at using Chimera Tool to roll back the firmware. I cannot seem to find a ZV5 firmware file.
Next I looked at using chimera for IMEI repair. I figured if I change the IMEI just long enough to modify the APN settings then revert it back, I would be golden. Chimera gave me an error of not having access to the ports. I tried to dial in the following codes to enable port check but none have access to the "hidden menu". 277634#*#, 3845#*997#, *#546368#*997#. I tried to factory reset the phone, no luck.
I was able to use ##DIAG# (##3424#) and enable DIAGNOSTIC mode, yet this seemed to do nothing about ports.
I was able to enter ##DEBUG (##33284#) but there is no ability to ediit in here. Although at one point in time I was at a screen asking for an SVC code, no idea how to get back there though.
Tried to do a "fix" on Chimera, which is the same as refurbish on LG Up (I need the phone in factory condition), but apparently this device does not support refurbish mode. So flashing software is not wiping anything.
I cant seem to boot it into recovery, for god knows why.
QUESTIONS I HAVE
How do I completely wipe the phone of all user data?
How do I open these ports since the codes provided bring up no menu?
Since sprint is the only one recognizing the bad ESN, is this device able to even swap carriers?
What reason would APN not have an ability to edit or modify?
What additional tactics can I use to get my goal accomplished?
Hopefully we can brainstorm together

Please refer to this thread, it should work and do what you need to withthat apk. I belive its under IOT menu then under lte and put it in lab mode and turn on all the bands plus adding APN .. Im not to sure but ask the OP im sure he is way more helpful... asfar as adding the apn without this you need root to be able to do this and for nonroot i believe you must use ADb commands to tgecdevice and add them from there. there is threads oithere....
https://forum.xda-developers.com/v20/help/lg-v20-cdma-to-lte-gsm-switch-via-t3602409

if the esn is now listed as unpaid, or lost /stolen cricket will not be able to add the esn to their system either. its a nation wide list that blacklist's the device.
Unfortunately changing the apns etc wont fix this.
ZV6 currently does not have a way to be rolled back, so there is 0 root/custom options.
APNS have been blocked by sprint for some time now and using some root methods they can be unlocked, in your case you wont be able to access them due to being unable to root.
Tools like CDMA WORKSHOP, QPST, QXDMA, etc may be able to write the apns and such you would need, if you could get the msl for the device, but if it is no longer active, and the device has a "bad esn" then you wont be getting that from the carrier. I dont believe youll be able to access the nv items etc without it and probably not going to be easy to locate the msl.
##diag# is how youll talk to the device on cdma workshop etc, youll need to go to your installed devices and change its com port to a port thats free and remember the port as the tools need you to select that port, but again they wont work for you without the msl anyways.
so in a nutshell, it looks like your best option is to sell the phone as parts only, or if recently purchased on swappa and it was listed good esn and its not then file a report at-least to make swappa aware.

Team DevDigitel said:
if the esn is now listed as unpaid, or lost /stolen cricket will not be able to add the esn to their system either. its a nation wide list that blacklist's the device.
Unfortunately changing the apns etc wont fix this.
ZV6 currently does not have a way to be rolled back, so there is 0 root/custom options.
APNS have been blocked by sprint for some time now and using some root methods they can be unlocked, in your case you wont be able to access them due to being unable to root.
Tools like CDMA WORKSHOP, QPST, QXDMA, etc may be able to write the apns and such you would need, if you could get the msl for the device, but if it is no longer active, and the device has a "bad esn" then you wont be getting that from the carrier. I dont believe youll be able to access the nv items etc without it and probably not going to be easy to locate the msl.
##diag# is how youll talk to the device on cdma workshop etc, youll need to go to your installed devices and change its com port to a port thats free and remember the port as the tools need you to select that port, but again they wont work for you without the msl anyways.
so in a nutshell, it looks like your best option is to sell the phone as parts only, or if recently purchased on swappa and it was listed good esn and its not then file a report at-least to make swappa aware.
Click to expand...
Click to collapse
Is the SPC the same as the MSL

williamschromebook said:
Is the SPC the same as the MSL
Click to expand...
Click to collapse
Yes

What if I have the SPC?
Sent from my HTC 0PJA2 using XDA Labs

LG G6 ex-demo unit-legally acquired! H870V (dual sim)

Okay, so probably looks fishy, so to get one thing out of the way, if anyone wants to blame around how the device must've been stolen, I can make a video proof showing a purchase on eBay Stores close all the time, so what? And there is nothing bad about trying to make use of something that has no use anymore, so if you are planning to give me a moral lecture how I'm doing something evil by saving a good piece of valuable hardware from going to trash, you are welcome to turn your head away.
Now that we've eliminated the spammers, let's try to do something constructive
So this is the current state of the unit:
SW ver. V10f-OPT1-HQ.
Baseband ver. MPSS.TH.2.0.1.c3.1-00014-M8996FAAAANAZM-1.86009.21
Build num. NRD90U
Kernel ver. 3.18.31
What I'm trying to achieve is to make this unit have GSM network in EU, hopefully without touching the hardware, so that's the first thing I have to test. I read somewhere that it might be possible to achieve that by writing QCN and EFS with Octoplus box.
If someone can do a backup of their EFS (with Chimera possibly), I'd like to "borrow" it for a ride, just to see if that is true.
The other problem is that I cannot get my BL unlocked because I don't have an IMEI, so I have to hope for someone to make a workaround for this.
Probably could be achieved by QFIL flash, but that's never easy.
Since I don't know much about LG's FW files and how they work, I have to ask if it's possible to compile a "passable" KDZ containing unlocked bootloader or custom recovery with secure check modified so that I can get this thing opened?
Another thing which I have to report is that I found a totally legit way (at least on my FW ver.) to write/repair IMEI without root, just through service menu!
I don't know if other devices have this and if this is maybe not a new thing at all, but I find it pretty amazing!
If there is interest, I will provide some preview in comments, as well as APK if possible!
Right now I managed to write some generic IMEI.
It has a generator inside, it practically changes not only IMEI, but as well as MAC and some other stuff according to values which you set (I remember there is a region setting, so I selected EU_OPEN).
To make sure, I'm not trying to fake an IMEI and cheat my way through gaining network access and who knows what, but before I purchase the new EFS legally, I'd like to see if this HW is capable of running it.
So, another thing is that the network still isn't comming. I think the band can be set only on 1900 or something like that, but I think there might still be network limitation due to SW, no matter I flashed it with LG_UP and modem file got flashed normally as any other file.
Cell network is grayed out in settings, when I put the SIM in, it seems to detect it at first, but later in most of the SIM related settings which I tried to mess with in service menu it says that SIM is not detected. Generally when I remove SIM/SD card tray it detects it and asks for a SIM.
If there is nobody willing to borrow an EFS, I hope there is someone who really knows meanings of all these stuff in this service menu, who can guide me through a little bit.
I think there's chance that some settings there disable networking, and if I could copy and paste them from another device, it might wake up. It doesn't have reception at all, not even 112 and 911 at the moment, it detects no networks when I jump to manual network selection option (because I cannot access through settings), and that discourages me a little.
If there is any genius out there, get summoned please!

So you stole it?

basicreece said:
So you stole it?
Click to expand...
Click to collapse
Yeah dude, can't believe these guys bought it :laugh::laugh::laugh:

Jovan Riparazioni said:
Yeah dude, can't believe these guys bought it :laugh::laugh::laugh:
Click to expand...
Click to collapse
Now let me steal your EFS
How does the service menu look on your G6? Did you check it out?

Jovan Riparazioni said:
Now let me steal your EFS
How does the service menu look on your G6? Did you check it out?
Click to expand...
Click to collapse
I have a h870V and wanted to know if it is possible to flash an H870 rom

Wellington cerqueira said:
I have a h870V and wanted to know if it is possible to flash an H870 rom
Click to expand...
Click to collapse
I didn't find a way to flash any other firmware. I think it's impossible to get network. I disassembled my own and compared the motherboard with the one that I found on Google images. It seems that a modem chip is absolutely missing from the device. That explains no network, even after generating EFS (at least in my case).
I don't know what is your level of knowledge, but for example, I've been trying to root Korean LG V10, and haven't succeed, although I've seen some websites selling custom root .tot firmware files, but I don't know is it possible to make or find those files for newer devices.

lg g6 demo flashed
i try to flash demo retail version of g6 with lg up, i put firmware h87010d and after sucessfull instal it goes wrong and phone start to go restarting.because there is no possebility to turn it off i couldnt do anything so i put the phone on table and leave it.after the night battery was off at 0% and i put it on charger and try to start recovery mode.after phone goes on there was a warning that recovery mode is desibled by admin.after that i start to power on the phone and it starts normaly with new software without retail mode on it.

mikkica said:
i try to flash demo retail version of g6 with lg up, i put firmware h87010d and after sucessfull instal it goes wrong and phone start to go restarting.because there is no possebility to turn it off i couldnt do anything so i put the phone on table and leave it.after the night battery was off at 0% and i put it on charger and try to start recovery mode.after phone goes on there was a warning that recovery mode is desibled by admin.after that i start to power on the phone and it starts normaly with new software without retail mode on it.
Click to expand...
Click to collapse
Hi! Is your sim card slot working? Maybe you can send some links for your solution? In my case is LG up saying that h870v is an unknown device. I think that i have the wrong LGUP_common.dll if I understood correctly. And couldn't find the right one.
And the System is using ca 20 Gb. Is it possible to unlock the bootloader without IMEI. Somehow to get it rooted?