[Q] Damaged EFS, no backup - how to repair S5 with NULL IMEI? - Galaxy S 5 Q&A, Help & Troubleshooting

Hi,
I have a problem with my S5. After flashing a custom ROM I found out that my IMEI is null, and so the EFS is corrupted. I tried to restore it from backup only to find out that I have deleted the backup
What can I do now? I anything? Would restoring EFS from another S5 (with damaged mainboard) could be a solution?
Generally everything works except of phone modem, I have got IMEI written - is there maybe a method to set the IMEI without EFS or a method to create EFS? I already tried sam IMEI changers, but I found out that they only do this on the application level - apps will be able to read different IMEI for licensing, but phone still sees NULL IMEI.

You can't restore EFS from another S5 coz it'll brick your device.

Bruce666 said:
You can't restore EFS from another S5 coz it'll brick your device.
Click to expand...
Click to collapse
Thanks for answer
So what can I do?

Found sth like this:
Never tried coz never lost IMEI
In the dialer, type- *#197328640# or *#*#197328640#*#*
>You will be prompted into the Command mode, provided On the screen, Select on Common, normally option 6
> Now Select (FTM) Option 1
>FTM is for debugging and testing., (Field Test Mode)
>If (FTM) is on, you will have to turn this OFF
>As soon as you turned this off your NULL or altered IMEI number will be restored
>(Important) Without leaving the Command screen, press the Menu key, the button that’s found left of the Home button.
> Select Key input and enter option 2. In this case, you want to turn it off
>Wait for a minute. This will turn your FTM OFF
> Remove your battery and SIM card for two minutes
>Place your battery in your phone, (important) do not place your SIM card in.
> When the phone is booted, enter the command mode again dial – *#197328640#
>Select the Debug Screen, normally option 1
>After that, choice phone control, option eight
>Click on nas control, option 3
>Afterwards, click “RRC (HSDPA), option 5
>To Fix not registered on network or Null IMEI #, click RRC revision, option 2.
>Choose the released of your phone, here we will choose option 5 (HSDPA only)
>Final step to fix Null IMEI not registered on a network for Samsung Galaxy is to turn off your phone and insert your Sim card
or
>Insert your Sim card, afterwards reboot your phone

Thanks - are you sure about this bricking device?
I already tried this numbers but it always says "No Network", The only instruction that I found was to use *#0011# and it goes into the Service Menu, but it doesn't look like that described. There is something called NVM restore, but it doesn't do anything with IMEI
I am gonnna post screenshots at evening.
Bruce666 said:
Found sth like this:
Never tried coz never lost IMEI
In the dialer, type- *#197328640# or *#*#197328640#*#*
>You will be prompted into the Command mode, provided On the screen, Select on Common, normally option 6
> Now Select (FTM) Option 1
>FTM is for debugging and testing., (Field Test Mode)
>If (FTM) is on, you will have to turn this OFF
>As soon as you turned this off your NULL or altered IMEI number will be restored
>(Important) Without leaving the Command screen, press the Menu key, the button that’s found left of the Home button.
> Select Key input and enter option 2. In this case, you want to turn it off
>Wait for a minute. This will turn your FTM OFF
> Remove your battery and SIM card for two minutes
>Place your battery in your phone, (important) do not place your SIM card in.
> When the phone is booted, enter the command mode again dial – *#197328640#
>Select the Debug Screen, normally option 1
>After that, choice phone control, option eight
>Click on nas control, option 3
>Afterwards, click “RRC (HSDPA), option 5
>To Fix not registered on network or Null IMEI #, click RRC revision, option 2.
>Choose the released of your phone, here we will choose option 5 (HSDPA only)
>Final step to fix Null IMEI not registered on a network for Samsung Galaxy is to turn off your phone and insert your Sim card
or
>Insert your Sim card, afterwards reboot your phone
Click to expand...
Click to collapse

evilsnailofdestruction said:
Thanks - are you sure about this bricking device?
I already tried this numbers but it always says "No Network", The only instruction that I found was to use *#0011# and it goes into the Service Menu, but it doesn't look like that described. There is something called NVM restore, but it doesn't do anything with IMEI
I am gonnna post screenshots at evening.
Click to expand...
Click to collapse
Yes I'm sure about bricking. EFS partition on your phone is made for ONLY YOUR PHONE. This is sth like restoring TA Partition on xperia devices. When you flash ta from another xperia, you brick device
Tapatalked from SM-G900F

I read someone saying they had successfully restored a backed up EFS partition from an identical model S5 to another, and it worked
The problem I can see, is if the original gets blocked by the carrier, chances are so will the clone
Not sure about network issues having two identical devices on the same network at the same time, both making calls, might end up like an IP conflict

Pretty sure that transferring IMEI from one device to another is against the law too......
Sent from my rooted, debloated stocKK kn0x0 SM-G900F

Yes, I also know that is it against the law, but I have a complete phone with broker mainboard (so even the IMEI is written on the back), and I would like to use this opportunity to copy the IMEI from old (broken) mainboard to the new one. It even looks better than the situation when I have got and old case with written IMEI that doesn't correspond to the IMEI on the new mainboard.
The mainboard is broken that way, that there is short-circuit somewhere and the CPU is constantly using power and it get's really hot, so it use useless.
I am trying to flash EFS, let's see what is gonna to happen
keithross39 said:
Pretty sure that transferring IMEI from one device to another is against the law too......
Sent from my rooted, debloated stocKK kn0x0 SM-G900F
Click to expand...
Click to collapse

1. Tried flashing EFS = nothing happened
2. Tried flashing EFS + Modem + ModemST1 + ModemST2 = nothing happened
3. Restored android to STOCK
I can't get into the service menu.
The only Service menu that I can get into is this one, but there isn't any fixing IMEI/NVRAM option
Code:
*#0011#
Menu > Back
Menu > keyInput "Q"
Menu > keyInput "0000"
Wait for few seconds
evilsnailofdestruction said:
Yes, I also know that is it against the law, but I have a complete phone with broker mainboard (so even the IMEI is written on the back), and I would like to use this opportunity to copy the IMEI from old (broken) mainboard to the new one. It even looks better than the situation when I have got and old case with written IMEI that doesn't correspond to the IMEI on the new mainboard.
The mainboard is broken that way, that there is short-circuit somewhere and the CPU is constantly using power and it get's really hot, so it use useless.
I am trying to flash EFS, let's see what is gonna to happen
Click to expand...
Click to collapse

Hi,
you have 2 options
1. Use Samsung Kies which will repair you efs
2. Flash with Odin the official rom 5.0
If you install another efs, the data installed may be not work, even if it is same model. In S5, nothing to do with the IMEI
You can also root the phone and with adb commands, erase all the efs
you can also use Z3X tools

Hi,
Thanks - some new ideas
So if I understand you correctly, I have 3 options:
1. Use Samsung Kies which will repair you efs - how to repair EFS with Samsung Kies?
2. Flash with Odin the official rom 5.0 -> I tried flashing oryginal 4.4 and it didn't helped. Should flashing 5.0 help?
3. You can also root the phone and with adb commands, erase all the efs - What will erasing EFS will give me? Shouldn't I have EFS partition with some data?
you can also use Z3X tools -> ok... I am gonna figure this out, 'cause I don't know it yet
FrenchSnake said:
Hi,
you have 2 options
1. Use Samsung Kies which will repair you efs
2. Flash with Odin the official rom 5.0
If you install another efs, the data installed may be not work, even if it is same model. In S5, nothing to do with the IMEI
You can also root the phone and with adb commands, erase all the efs
you can also use Z3X tools
Click to expand...
Click to collapse

I have the same issue. Anybody may help me ? (galaxy S5 SM-G900H made in Vietinam)
thanks in advance

Bruce666 said:
Found sth like this:
In the dialer, type- *#197328640# or *#*#197328640#*#*
>Insert your Sim card, afterwards reboot your phone
Click to expand...
Click to collapse
This does nothing on Galaxy A5!
attached 0011 code screen

Has anybody found the solution? Efs professional gives me error " device connection lost" while using Qualcomm nv tools on s5.

Related

not registered on the network Device Galaxy Note 3

not registered on the network
Device Galaxy Note 3 9005
After downloading the new BTU-N9005XXUBMJ3
I experienced the same error when I sold my Note 2, the buyer got the same error. I had been customizing the Note 2, rooting, flashing custom kernels and so. The root cause was that somehow the efs partition became corrupt and the phone had an invalid IMEI. I was lucky that I made and efs backup after rooting, so I could restore my efs backup and the phone could connect to the network again. I was very happy I made that backup, else the buyer wanted his money back of course! Maybe you can do a search in the Note 3 forum of XDA (Original Android Development), it has an efs backup/restore tool. Hope this solves your problem, good luck!
Hi, before I got my Note 3 I had the Galaxy S4 for 1 week. I got the error everytime I restarted the phone. What I had to do was go into the settings and search for networks and then hit automatic and that made it register again.
Haven't seen it on my Note 3 so far though.
SweFox said:
Hi, before I got my Note 3 I had the Galaxy S4 for 1 week. I got the error everytime I restarted the phone. What I had to do was go into the settings and search for networks and then hit automatic and that made it register again.
Haven't seen it on my Note 3 so far though.
Click to expand...
Click to collapse
All thanks to you ....When you switch from the network to the GSM phone works without problems and when you return to a wealthy network 4 Lite gives non-registration
Solved with NV Rebuild
Dear All
I got the same problem of no network on my Note 3 SM-G9008V and I have solved by NV Rebuild. Here we go....
1. Open phone dialer, key-in this codes in sequence:
- *#0011#, will open ServiceMode screen,
- then left key, tap on Back,
- left key, tap Key Input, type Q then OK,
- left key, tap Key Input, type 0000 then OK,
- left key, tap Key Input, type 0000 then OK, wait some times to get the Main Menu of ServiceMode
2. Tap on Menu [2] to open UE SETTING&INFO MENU, then tap [1] SETTING
3. On UE SETTING MENU, tap [2] SYSTEM
4. On UE SETTING SYSTEM MENU #1, tap [3] NV REBUILD
5. On NV REBUILD MENU, tap [3] ALL, then reboot your phone by POWER SWITCH and select Restart, confirm with OK
After phone rebooted, I got back normal network
I think this will work for other type, please test and feedback....
WARNING: Please do not play with any menu on Service Mode if you don't understand what you do. You are on YOUR OWN RISK to do so.....
Regards,
XE
Not registered on a network
I need help.
I read all commentset on here, watch YouTube but still no help. I reboot, I factory rest still having problems with it. I even had a technician flash it. I am not connected to any network and I can't. No calls no message receiving or sending nothing at all.
Please help me. ....
Crystal26 said:
I need help.
Post lacks information .
What phone what firmware what have you done .
Correct IMEI ?? Correct settings ???
Click to expand...
Click to collapse
I factory reset, change my sim
I did not install any fire ware so I am guessing I have what came on the phone.
I am using note 3 sm n900t
Version 5.0
Probably the sim .
Correct IMEI ?? Correct settings ???
The imei is the same as when I pull the battery out

No signal at WCDMA

Hello guys,
I need your help guys!
I have no signal at WCDMA, it means signal lost, no 3g, if i switch back to EDGE, Signal is there, edge is on
Past week i had lost my IMEI, but recovered it by doing downgrade to 4.2.2 and restore IMEI by writting it by qpst.
I think my phone lost the RF Cal., My basband is not unknown but the product code is not active
Thread can be closed,
fixed it after doing erase efs at service mode then restored efs and wrote original imei back
Bordo_Bereli51 said:
Thread can be closed,
fixed it after doing erase efs at service mode then restored efs and wrote original imei back
Click to expand...
Click to collapse
Hi. I have the same problem. Do you need a box to do this?
pseudobluz said:
Hi. I have the same problem. Do you need a box to do this?
Click to expand...
Click to collapse
No dial *#0808#; select RNDIS - DM - Modem and apply
Install qpst on PC and their drivers;
Open Qpst config; add port, select diagnostic com port, then download EFS Professional
open it and click qualcomm nv tools, open it select com port and then connect,
go to third tab, tick IMEI(DEC) and write your given IMEI at the back of the lG Optimus G (found in your profile) and then click write and reboot
you have your IMEI, after then flash stock 4.0.3
Bordo_Bereli51 said:
No dial *#0808#; select RNDIS - DM - Modem and apply
Install qpst on PC and their drivers;
Open Qpst config; add port, select diagnostic com port, then download EFS Professional
open it and click qualcomm nv tools, open it select com port and then connect,
go to third tab, tick IMEI(DEC) and write your given IMEI at the back of the lG Optimus G (found in your profile) and then click write and reboot
you have your IMEI, after then flash stock 4.0.3
Click to expand...
Click to collapse
thanks, i'll try
and actually i have no optimug g, just old info, it's i9505
pseudobluz said:
thanks, i'll try
and actually i have no optimug g, just old info, it's i9505
Click to expand...
Click to collapse
then you need to downgrade to 4.2.2 and do the step and when you got imei back flash 4.4.2
if you are on new bootloader download 4.4.2 bootloader put it in 4.2.2 rom and flash and do the step and flash 4.4.2 stock again
Bordo_Bereli51 said:
then you need to downgrade to 4.2.2 and do the step and when you got imei back flash 4.4.2
if you are on new bootloader download 4.4.2 bootloader put it in 4.2.2 rom and flash and do the step and flash 4.4.2 stock again
Click to expand...
Click to collapse
I'll try later this day. Currently my IMEI is ok but can;t connect at all to 3g
Bordo_Bereli51 said:
No dial *#0808#; select RNDIS - DM - Modem and apply
Install qpst on PC and their drivers;
Open Qpst config; add port, select diagnostic com port, then download EFS Professional
open it and click qualcomm nv tools, open it select com port and then connect,
go to third tab, tick IMEI(DEC) and write your given IMEI at the back of the lG Optimus G (found in your profile) and then click write and reboot
you have your IMEI, after then flash stock 4.0.3
Click to expand...
Click to collapse
I've tried EFS Professional and my IMEI is fine, not damaged in any way. This is really strange.
pseudobluz said:
I've tried EFS Professional and my IMEI is fine, not damaged in any way. This is really strange.
Click to expand...
Click to collapse
flash stock firmware and flash modem twice if it does not work try the next step given below:
type this in dial *#12580*369# to check rf cal and say to me if it is none or has a date
Bordo_Bereli51 said:
flash stock firmware and flash modem twice if it does not work try the next step given below:
type this in dial *#12580*369# to check rf cal and say to me if it is none or has a date
Click to expand...
Click to collapse
I've tried and still nothing. As for the Main Version info:
RF cal: NONE
HW Rev.: Not Active
Ideas?
pseudobluz said:
I've tried and still nothing. As for the Main Version info:
RF cal: NONE
HW Rev.: Not Active
Ideas?
Click to expand...
Click to collapse
It seems that your Radio Information has gone. Mine says a date, but try this: type in dial *#27663368378#
go to [1]UMTS then to common then to nv rebuild and select load default NV if that does not work go again to nv rebuild and select nv restore
Bordo_Bereli51 said:
It seems that your Radio Information has gone. Mine says a date, but try this: type in dial *#27663368378#
go to [1]UMTS then to common then to nv rebuild and select load default NV if that does not work go again to nv rebuild and select nv restore
Click to expand...
Click to collapse
Thanks, mate. But I've been impatient and left phone in Repair shop. I'll know the status during the evening. Will update later.
They've repaired it with box.
Bordo_Bereli51 said:
No dial *#0808#; select RNDIS - DM - Modem and apply
Install qpst on PC and their drivers;
Open Qpst config; add port, select diagnostic com port, then download EFS Professional
open it and click qualcomm nv tools, open it select com port and then connect,
go to third tab, tick IMEI(DEC) and write your given IMEI at the back of the lG Optimus G (found in your profile) and then click write and reboot
you have your IMEI, after then flash stock 4.0.3
Click to expand...
Click to collapse
when ai select RNDIS - DM - Modem the computer says usb not recodnized,what to do?where can ai find qpst and the drivers?
find on google galaxy s4 modem or diagnostic drivers

[Q] Help repairing my IMEI with QPST and EFS Professional tools

Hello again folks,
I opened another thread regarding this problem I have, but since no one replied, I did some research and made some progress. Here's what happened: my cousin bought me an gt-i9301i in the UK, made a 5 min call or more with her SIM as instructed, and sent me the phone here in Brazil. When I received, the phone asked for the SIM network unlock PIN. I tried to unlock it by myself, with no success. Before sending it to a local store to try unlocking it, the only things I did were flashing a Chain Fire rom to root it, and then flashed a Stock rom to turn it back to its original state before sending it to be repaired. The store "unlocked" the phone, but now my IMEI is gone.
In the last days, I'm trying to fix it using QPST and the EFS Professional tools, as instructed in this thread (http://forum.xda-developers.com/gal...warning-guide-backup-restore-imei-nv-t1946915) and also this external tutorial (http://droidmodderx.com/galaxys3/?page_id=79).
I did the following procedures on my phone using its stock ROM, with USB debugging on, and tried with both root access turned on and off.
This is what I achieved so far: I connected my phone to QPST (by the way, the working code for my S3 Neo phone is *#0808#), and after turning on the RNDIS + DM + MODEM mode on, made a backup using the "Download" QPST tool. I tried to edit that backup (the file has about 260 Kb) using the "RF NV Manager", as instructed in the second post I mentioned, by going to the item 550 and writing my IMEI in blocks and everything, and then creating a separate QCN file. When I try to restore the new file using the Download QPST tool, which supposably has my IMEI number on it, I receive the message "Received an invalid command from the phone" at just 1%. When I try to restore the original backup, it goes to 100%, but in the end, I receive the message "Could not Reset the Phone. Communication Errors Occurred". When I try to edit my IMEI directly on the phone, when I reboot it and turn it back to MTP + ADB, my IMEI is still showing nothing.
Using the EFS Professional Qualcomm NV Tools, when I try to write my IMEI on the phone, using the Secure Ops. tab, I recieve an error message saying NV_ERR_BAD_SECURITY_MODE, and when I try to edit my QCN backup, I receive the message "Unable to write selected byte data to QCN Backup!".
Any thoughts on what else can be done to restore my IMEI?
Thanks

LG G2 with null IMEI after crash

Hello
I have an LG G2 D802 that was working perfectly but some days ago, after a crash with broken screen the phone suddenly show the message "Service Disabled" and the code *#06# returns IMEI Null.
By the time of the crash it was kit kat, and I made a factory reset that did not solve the problem. After that I use LG Flash tool to install the lollipop 5.0.2 rom, but the problem remains.
Then I took a lot of time trying to understand the problem and I found out that it could have a EFS backup, but in fact I didn't have one.
The next thing was root the device (it is allready out of warranty) and use alternative tools. I have tried to rewrite the IMEI I have in the box with QPST , Qualcomm NV tools and did not work.
- QPST (2.7.4.11) works and shows the device but doesn't work the Backup QCN (To get QPST to show the device I needed to apply this with adb shell - http://forum.xda-developers.com/lg-...ct-g2-d800-t3175064/post62250384#post62250384, but it works and shows the phone in the ports list);
- RF NV manager returns and error "NvManager::getNvItemsFromPhone( const string comPort ) - QpstServer::sendSyncImpl - Bad response from phone (DM packet commands 19-24)";
- Qualcomm NV tools works and reads the device, then I write ESN, MEID and IMEI with good confirmation messages, but when I rebbot it remains with Null IMEI.
By this time I am in the search for more wise help and experience.
I also have "Unknown Baseband", and by reading some threads I thing the problem is that the phone has Null IMEI and the tools are unable to writr data to partitions. The only way is to write NV1 and NV2 by dd command into mmcblk0p10 and mmcblk0p11.
The phone works perfectly in all aspects (sensors, camera, wifi, screen) except for the phone signal "service disabled" with an X above the 4 signal bars. I gess it is not a hardware problem
I am struggling with this because it is a very nice device, and I need to bring it back to life before replacing the broken screen.
Any help?
thanks
aquelhas said:
Hello
I have an LG G2 D802 that was working perfectly but some days ago, after a crash with broken screen the phone suddenly show the message "Service Disabled" and the code *#06# returns IMEI Null.
By the time of the crash it was kit kat, and I made a factory reset that did not solve the problem. After that I use LG Flash tool to install the lollipop 5.0.2 rom, but the problem remains.
Then I took a lot of time trying to understand the problem and I found out that it could have a EFS backup, but in fact I didn't have one.
The next thing was root the device (it is allready out of warranty) and use alternative tools. I have tried to rewrite the IMEI I have in the box with QPST , Qualcomm NV tools and did not work.
- QPST (2.7.4.11) works and shows the device but doesn't work the Backup QCN (To get QPST to show the device I needed to apply this with adb shell - http://forum.xda-developers.com/lg-...ct-g2-d800-t3175064/post62250384#post62250384, but it works and shows the phone in the ports list);
- RF NV manager returns and error "NvManager::getNvItemsFromPhone( const string comPort ) - QpstServer::sendSyncImpl - Bad response from phone (DM packet commands 19-24)";
- Qualcomm NV tools works and reads the device, then I write ESN, MEID and IMEI with good confirmation messages, but when I rebbot it remains with Null IMEI.
By this time I am in the search for more wise help and experience.
I also have "Unknown Baseband", and by reading some threads I thing the problem is that the phone has Null IMEI and the tools are unable to writr data to partitions. The only way is to write NV1 and NV2 by dd command into mmcblk0p10 and mmcblk0p11.
The phone works perfectly in all aspects (sensors, camera, wifi, screen) except for the phone signal "service disabled" with an X above the 4 signal bars. I gess it is not a hardware problem
I am struggling with this because it is a very nice device, and I need to bring it back to life before replacing the broken screen.
Any help?
thanks
Click to expand...
Click to collapse
Today I tried this method with adb shell, to make sure Qualcomm NV tool writes IMEI to the phone...
setprop sys.usb.config diag,adb
ls -al /dev/block/platform/msm_sdcc.1/by-name
dd if=/dev/zero of=/dev/block/mmcblk0p10 (no space left on device)
dd if=/dev/zero of=/dev/block/mmcblk0p11 (no space left on device)
dd if=/dev/zero of=/dev/block/mmcblk0p16 (no space left on device)
Can anyone tell me why the "no space left on device" occurs?
Thanks
Hello!!!
First sorry for my poor english!
I think that you have a bad connection after crash!!!!
1. Remove the Backcover of your phone.
2. Remove the backplastic on upper part of phone using screw driver.
after remove back cover and upper plastic
3. Remove Battery Connector.
4.Remove all connectors except camera connector, Proximity sensor and face camera
After removing connectors
6.Reattach all connectors! Firmly press all the connectors
7.Reattach battery connector!!
Et voilÃ*!!! This is a way I do after losing IMEI and Baseband! IMEI: null and baseband should be implemented!!!
I had tried most method to fix but nothing happens,
Hope to help you!
aquelhas said:
Hello
I have an LG G2 D802 that was working perfectly but some days ago, after a crash with broken screen the phone suddenly show the message "Service Disabled" and the code *#06# returns IMEI Null.
By the time of the crash it was kit kat, and I made a factory reset that did not solve the problem. After that I use LG Flash tool to install the lollipop 5.0.2 rom, but the problem remains.
Then I took a lot of time trying to understand the problem and I found out that it could have a EFS backup, but in fact I didn't have one.
The next thing was root the device (it is allready out of warranty) and use alternative tools. I have tried to rewrite the IMEI I have in the box with QPST , Qualcomm NV tools and did not work.
- QPST (2.7.4.11) works and shows the device but doesn't work the Backup QCN (To get QPST to show the device I needed to apply this with adb shell - http://forum.xda-developers.com/lg-...ct-g2-d800-t3175064/post62250384#post62250384, but it works and shows the phone in the ports list);
- RF NV manager returns and error "NvManager::getNvItemsFromPhone( const string comPort ) - QpstServer::sendSyncImpl - Bad response from phone (DM packet commands 19-24)";
- Qualcomm NV tools works and reads the device, then I write ESN, MEID and IMEI with good confirmation messages, but when I rebbot it remains with Null IMEI.
By this time I am in the search for more wise help and experience.
I also have "Unknown Baseband", and by reading some threads I thing the problem is that the phone has Null IMEI and the tools are unable to writr data to partitions. The only way is to write NV1 and NV2 by dd command into mmcblk0p10 and mmcblk0p11.
The phone works perfectly in all aspects (sensors, camera, wifi, screen) except for the phone signal "service disabled" with an X above the 4 signal bars. I gess it is not a hardware problem
I am struggling with this because it is a very nice device, and I need to bring it back to life before replacing the broken screen.
Any help?
thanks
Click to expand...
Click to collapse
What should I do? If the same problems on RF NV manager got the same error. bad response from phone. How do i fix it?
Wow! What a coincidence!
I also have a LG G2 (D802) and the EXACTLY SAME problems!
Background:
It's been about a year since I am on Lineage OS 14.1.
Since 6 months ago, I started having issues with my antenna. Sometimes, antenna bar got empty and sometimes I couldn't get 3G signal on locations that I had before (and others had with no problem)
Fast forward 3 months ago and one day my phone couldn't detect sim card and IMEI was vanished. I had to restart it few times to make it come again.
And a month ago, I dropped my phone and screen shattered, Exactly Like you. After changing broken LCD with new one, and also a new battery, I couldn't get sim card detected anymore, No matter how much i restarted the phone.
IMEI was null and no baseband version was showed on about page. Also back of the phone (under camera started to get suspiciously hot.
I started applying pressure to different parts and sometimes phone hanged and restarted and maybe one in 20 times I could get antenna and sim card back.
Things I've done and their result:
Opening the phone numerous times and checked the connectors and unplugged/plugged them: nothing changed
Flashing back to stock (found lollipop kdz and flashed it via lg flashtool): nothing changed
Flashing Radio (Some images were available on XDA): nothing changed
Restoring ROM to an old backup I had (year ago): same as above
Trying to use QPST/NV Tools: They cant talk to modem.
Showing the phone to some repairmen: they cant talk to modem to set the IMEI either.
Still, sometimes by applying pressure to phone randomly, the IMEI comes back, which prevents me to cut hope and drop the phone into trash!
I would really love to know your result! were you able to fix it?
euphoria360 said:
Wow! What a coincidence!
I also have a LG G2 (D802) and the EXACTLY SAME problems!
Background:
my phone couldn't detect sim card and IMEI was vanished. I had to restart it few times to make it come again.
And a month ago, I dropped my phone and screen shattered, Exactly Like you. After changing broken LCD with new one, and also a new battery, I couldn't get sim card detected anymore, No matter how much i restarted the phone.
IMEI was null and no baseband version was showed on about page. Also back of the phone (under camera started to get suspiciously hot.
I started applying pressure to different parts and sometimes phone hanged and restarted and maybe one in 20 times I could get antenna and sim card back ...
Click to expand...
Click to collapse
How to Fix LG G2 no IMEI and not detecting SIM Card!
After I posted this reply here, I found a solution on some other topic about how to fix LG G2 WiFi issue. He opened the phone, and applied constant pressure (by putting a tape between WiFi chip and Metal Cover).
And I thought maybe my problem is similar too. So, this is the things I've done:
Download the Service Manual for your phone model. you can find it on Internet. Here is the one for LG G2
Look at the Service manual and find the chipsets related to IMEI/Service Issue. Usually they classify board components based on their common issues. For example, in G2 service manual, in pages 38 and 263, you can see this info.
For LG G2, The chips/IC's related to IMEI and Service were: U2003 (Bypass Booster), U2002 (WTR1605L), FL1014 (B3 DPX), U1101 (SP4T B7), FL1015 (B2/B3 Filter), FL1010 (DPX B20), U1005, U1000, U1001, U2002.
Most of these parts are under a metal shield which can be easily unmounted and mounted back on.
Make a thick piece of Tape and put it between the chips and the metal cover. The goal is to apply pressure to them to stick to the board.
Put the metal cover back on and close assemble the board. Done!
In my case, it worked, although after lots of repair men simply rejected my phone, I fixed it with just a little tape. Now, the IMEI is back, SIM Card is detected the moment phone is on, and I guess the phone consumes less power, since it doesn't get hot anymore.
Why this works? Well when you use your phone for a long time and it undergoes a of of heat/cooling cycle, the pins of some of these chips that tend to get hot, become a bit loose and get disconnected from the board. by doing above instructions you simply push them back.

i9502 (S4 duos) enable CP logging / enable diag mode

Hello,
I barely post anything as there is a huge amount of documentation on this forum, but I am really stuck at this and have no clue how to solve it.
I have two i9502 phones:
- one with good IMEIs and thus, working GSM, but the sensors are not working (hardware failure - sensorhub test fail + all sensors from the *#0*# menu are dead)
- one with good sensors, but one of the IMEI is null, thus GSM is not working
I am tying to clone the one with good IMEIs over the one with bad IMEIs. I have previously done this with success, but for the S4 Active model (i9525).
To do this, I need to use QPST or EFS Professional (awesome software btw) with the phone running in diag mode.
When I enable "DM+Modem+ADB" from the *#0808# menu I get "USB device not recognized" on my PC, a problem usually resolved by "Enable CP logging" from the original recovery.
The problem with this model is that "Enable CP logging" option is missing from the recovery.
Also, codes like ##DMMODE# or ##DIAG# have no effect and there is no relevant option in the service menu (*#0011#) or diag config menu (*#9090#).
Things I've tried so far:
- directly backup/restore EFS partitions using TWRP or EFS Professional
result: fail, I had both IMEIs null.
reason: Encrypted File System partitions are encrypted using the phone's certificate/key. This means the EFS backup only makes sense for the original phone.
- downgrade to android 4.4.2
result: fail, recovery menus and secret menu codes behave exactly the same.
- flash a recovery from i9500 to get the "enable CP logging"
result: fail: when I enable the option, the phone restarts and PC still not recognizes the device. This was the closest I ever got to solve this.
- downgrade to android 4.3
result: fail, cannot flash, odin gives error and the phone says something like "firmware revision 2, phone revision 3" (incompatible hardware revisions?)
Does anyone know how to enable diag mode for this model?
Important to mention that I do not have any kind of service box.
Things I am thinking of trying:
- flash MIUI and see from there. I doubt a ported rom could do anything about this.
- cook android 4.3 using dsixda's Android Kitchen, and flash using a custom recovery. I doubt this will work also. Expecting a brick
Thanks.
You ever figure out how to do this?

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