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Hi
i was a happy customer with my SII, which i brought from india, everything was fine, until a week back, when suddenly my SII shows no signal, no IMEI and no baseband
i didnt flashed or changed anything ...
1. i tried using different SIM - no use
2. this sim works in other phones
3. factory reset - no use
4. all is done...
**** I DONT HAVE A EFS BACKUP ***********
please give me a detailed fix route for this issue. as i cannot take the phone to INDIA in next 4 months to get is repaired. i have my warranty still. but thought that something can be done from my side to get it fixed. please please lemme know how to fix this! :-(
I had this happen to me. I hadn't taken an efs backup and thought I was screwed, but I found an auto backup on my SD card called EFS_BACKUP. Check if you have this, if you do, use GSII_Repair from the market to restore it.
Sent from my GT-I9100 using XDA App
Buy z3x box and you resolve problem
Sent from my GT-I9100 using Tapatalk
you can flash a new kernel and a baseband
sent from my GT-I9100 using Tapatalk in Guangzhou!
ksenthi5 said:
suddenly my SII shows no signal, no IMEI and no baseband
Click to expand...
Click to collapse
If your EFS is not total screwed and your nv_data backup is valid its possible GSII_Repair from market will work for you ...
Once you have tried all the guides and still in the same situation, check out this post
http://forum.xda-developers.com/showthread.php?t=1372169
I tried already flashing the Stock ROM once, and hence i dont know whether there is still a backup of EFS is in place....
can anyone take a little bit more time in explaining the steps to solve this,
like does a backup from another gSII will help the purpose... ?
please let me know more details, i will be thankfull like anything.
How come this problem happens, when we do a complete flash does the EFS folder get replaced or the the flash doesnot affect the EFS part at all?
i feel its very strange to see such kinda problem..
buying Z3x isnt a good idea
Z3x-box sa
msung - 169USD
Z3x-box LG - 169USD
Z3x-box 2in1 (sam+lg) - 299USD
qq594836605 said:
you can flash a new kernel and a baseband
sent from my GT-I9100 using Tapatalk in Guangzhou!
Click to expand...
Click to collapse
does this solves the issue>>>>? did u had any success stories
Odia said:
If your EFS is not total screwed and your nv_data backup is valid its possible GSII_Repair from market will work for you ...
Once you have tried all the guides and still in the same situation, check out this post
http://forum.xda-developers.com/showthread.php?t=1372169
Click to expand...
Click to collapse
what you call its as total screwed??
Will a backup from another Samsung Galaxy SII work ? for me?
EFS is a folder would be having NV_data and some other files. he's asking that the entire EFS got screwed or just some parts.?
I tried complete flash, means baseband,Kernel and system including User data reset.
i really confused about the relationship between the EFS folder and the IMEI,basband, blah blah...
EFS folder is nothing to with your blah blah nor your modem /baseband .
It is essential the details of the phone and its sole identity that is signified by the IMEI number individual to each phone . This IMEI number is used in the initial handshake each time you make a connection .
Lost or stolen phones can have their IMEI blocked once on the block list handshake is denied by the networks = no connection .
jje
GSII_Repair tool from Market, Four steps in that tool, am Done ...........all is well now.
Really really helpful tool. Thanks to all who suggested this TOOL ;-)
JJEgan said:
EFS folder is nothing to with your blah blah nor your modem /baseband .
It is essential the details of the phone and its sole identity that is signified by the IMEI number individual to each phone . This IMEI number is used in the initial handshake each time you make a connection .
Lost or stolen phones can have their IMEI blocked once on the block list handshake is denied by the networks = no connection .
jje
Click to expand...
Click to collapse
u mean is that a nw problem? nothing to do with the phone?
its really p***d off me for fixing that issue..
handshaking happens only after the phone detects the sim card. but here phone doesnot detect the sim at all. so is ur point still valid?
my phone was brought from samsung authorized dealer so how come its possible to happen so?
looks like EFS is the area where full flash no longer having access to it!! if not then a complete flash should have sorted that out.
EFS are reference files containing the imei and phone unique info, when these files gets corrupted, then phone will b helpless.
though u have root access u'll never get RW permission inside the folder.
there should be a automatic recovery, the SW should have had in place if there are corruption. poor implementation.... bah...
My previous phone was Walkman W8 and i used to root the phone and install custom rom and stuff and i was using the custom romed phone for a long time..
Then i got Samusng Galaxy S2 GT-I9100G and stared custom roming and rooting stuff.. After losts of soft bricks and hardbricks i managed to install rootbox rom with codeworkxx custom kernel in it..
But when i booted the the phone then the phone didnt detect sim card i tried restoring to original OS it sill didnt work..
Then i came across efs problems in xdaforums.. So i tried to use efs pro v1.7.14, backed up my efs and tries to restore them.. It didnt work then i downloaded a efs.img online for my phone and tried to restore my efs with that.. I didnt work also..
I tried to restore my backup and efs pro showed me this error...
Checking Device Connection... Device Connected!
Checking ROOT Access... Okay.
Restoring Device's '/efs' Folder, Please Wait...
Detected '/efs' Partition Location: UNKNOWN
Pushing EFS Backup To Device... Okay.
Copied: 3609 KB/s (20971520 bytes in 5.673s)Re-mounting Root File System... Okay!
Unmounting '/efs' Folder... Okay!
Mounting '/efs' Folder As Read/Write... Failed!
Error: Invalid Partition Location!
EFS Restore Failed!
Operation Finished!
Click to expand...
Click to collapse
I ended up in empty efs folder with some upgaddr file...
I appreciate any kind of advice.. I am a semi-noob...Now i am using my old SE Walkman W8 till this gets fixed...
Thank You
take it to warranty
I have the same issue and i made lot and lot of reasearch about the EFS folder, IMEI recovery, etc etc, and i concluded that if you still have warranty return the phone to stock and take it to warranty (mine is with samsung warranty since yesterday).
I'll update you if they could fix it.
So I guess there is no other way then..
Anyway thanks for the reply.
My flash count is 7 will they accept my warranty if I restore the phone to its original self and give them...
Is there Anyother Way using Odin to repair my phone..
Badly want my s2 back
OK. I looked here and there and got my efs folder back...
But still my Sim dosent work and also have a problem with baseband version, my phone says base-band version unknown..
You need to flash another modem, but before that enable Flight mode.
Well if you still want to put your phone in Samsung for warranty flash an ICS ROM and then use Chainsfire Triangle Away application to reset your Flash count.
That way you wont have problems with Samsung.
You have the application in Market or in a post in this forum, market its 1.75 € if you get it from the forum its free.
Guys thanks for the replies...
:fingers-crossed:
But some how i got my S2 to detect my SIM card by flashing stock modem..:good:
The modem that worked for me was DZKL3 stock modem... now my unknown baseband is solved.. And my phone detects the simcard but still not perfect have lots of bugs..But even though my cell detects my sim card when i try to call or sms i get "Not registered on a Network" warning...
Now i am stuck up there....What to do from here
Have you tried to switch operator in cellular networks settings?
Have you tried to switch operator in cellular networks settings?
Click to expand...
Click to collapse
Yes, it says unable to connect when i select my operator...
But the sim is perfectly working in my other phones..
Bump... Just checking for solutions from xda members...:highfive: By the way I flashed full stock ROM wiped SD card all stock setting... Still no use... Just "unable to connect t network" error popping up...
Is your IMEI 004999010640000 ? Whatever you do, don't post your IMEI (important) if it's different from this, a yes/no answer will do.
MistahBungle said:
Is your IMEI 004999010640000 ? Whatever you do, don't post your IMEI (important) if it's different from this, a yes/no answer will do.
Click to expand...
Click to collapse
YES!
In that case you have the generic IMEI. Your original IMEI is gone. Sounds like your carrier blocks access to devices with non-unique IMEI's (lots of carriers around the world do this; some don't).
Restore your EFS backup if you have one (lots of threads on here detailing how to do this), if you don't have one it's either a service centre job (which you'll probably end up paying for), or you can contact a member on here called Odia by PM who might be able to recover your EFS/IMEI for you (for a small donation; much cheaper than paying Samsung/an authorised repairer to fix it).
Thanks Mate:highfive: this helped me a lot! Hope this solves my problem...:victory:
Sorry for posting this again...
I think i already know my imei number so is there anyway that i can restore my imei number through terminal, or using an external application....
If so can u guys help me... Thanks...
Without an EFS backup, no. Only Samsung/authorised repairer can fix it (Odia can sometimes as well with whatever form of magic he uses to recover them).
IMEI's are a unique device identifier, I.E your IMEI is unique to your phone. Changing IMEI's or transferring them to other devices is illegal in most jurisdictions throughout the world.
try this
http://forum.xda-developers.com/showthread.php?t=1264021&highlight=efs
MistahBungle said:
Without an EFS backup, no. Only Samsung/authorised repairer can fix it (Odia can sometimes as well with whatever form of magic he uses to recover them).
IMEI's are a unique device identifier, I.E your IMEI is unique to your phone. Changing IMEI's or transferring them to other devices is illegal in most jurisdictions throughout the world.
Click to expand...
Click to collapse
Thanks.. I know my unique imei number which is in my back of my phone... How come changing to my own imei be illegal...
try this
http://forum.xda-developers.com/show...&highlight=efs
Click to expand...
Click to collapse
I lost my efs backup thats y i am stuck up here... otherwise i would have restored it long time ago...
I didn't say that. I mentioned it because whenever we get these threads on here, the conversation invariably turns to 'can I change my IMEI or transfer it to another phone', that's all.
You only have the two options. I'd recommend you contact Odia via PM & be patient.
raveensrk said:
Thanks.. I know my unique imei number which is in my back of my phone... How come changing to my own imei be illegal...
Click to expand...
Click to collapse
there was a post to recover imei
but now i cant find the thread in gs2 forum
Managed to wipe my EFS partition while trying to factory unlock my Galaxy S4 SCH-i545.
I had an IMEI of all 0's. I used EFS Pro change my IMEI to match that of the sticker under my battery. I managed to connect to the mobile network again, but this time as data/voice roaming. I have also backed up my /efs folder to my SD card. I used ODIN to use a .PIT file to repartition, and a stock Galaxy S4 image to do a full factory restore. I then re-rooted and installed CWM using the I545 All-In-One Tool. The phone was then in Factory/Test mode. I used Rom Toolbox's Root Browser go to /efs/FactoryApp/factorymode. I then changed it from "OFF" to "ON," removing the Factory Mode display after a reboot.
However, I am still unable to get 4G, still data roaming, and still unable to use the phone as I normally did. I no longer have a copy of the original /efs folder, as it was lost during the ODIN restore. Any way I can restore full use of my phone?
About Phone:
Model: SCH-I545
Android Version: 4.2.2
Baseband version: I545VRUAMDK
Kernal Version: 3.4.0-562219
[email protected]#1
Mon Apr 29 22:51:22 KST 2013
Build number: JDQ39.I545VRUAMDK
SELinux status: Permissive
Hardware version: I545.00
Status
Network: Unknown
Signal strength: -92 dBm 2 asu
Mobile network type: (switches between Unknown, 1xRTT, eHRPD:13)
Service state: In service
Roaming: Roaming
Mobile network state: disconnected
PRL version: 15233
ERI version: none
IMEISV: 00
Device status: official
I'm in the same boat. I didn't explicitly delete my EFS partition. I simply backed it up using Hyperdrives Aroma prior to installation. My phone has these connection issues also. Are you certain EFS is responsible? I'm not sure how I managed to corrupt it with a backup. Moreover my IMEI wasn't reset. I can't find the backup on my phone either. Was on the phone with tech support for an hour last night to no avail. Please let me know if you figure out how to fix it. I'll keep you posted as well. I just order a new sim card
Sent from my SCH-I545 using Tapatalk 2
I'm certain EFS is responsible.
Currently working on a way to use another phone's /efs folder, after the proper modifications, in my phone.
I did this. Do a factory reset through settings menu on phone. It reset and bingo
Sent from my SCH-I545 using Tapatalk 2
doom82 said:
I'm in the same boat. I didn't explicitly delete my EFS partition. I simply backed it up using Hyperdrives Aroma prior to installation. My phone has these connection issues also. Are you certain EFS is responsible? I'm not sure how I managed to corrupt it with a backup. Moreover my IMEI wasn't reset. I can't find the backup on my phone either. Was on the phone with tech support for an hour last night to no avail. Please let me know if you figure out how to fix it. I'll keep you posted as well. I just order a new sim card
Sent from my SCH-I545 using Tapatalk 2
Click to expand...
Click to collapse
found a solution ? got same problem
Since my original post, I have obtained a copy, obtained via dd using ADB while the phone was in recovery. It has not fixed the issue. Rather, the IMEI was again reset to 0 after the restoration. Getting a new SIM card has not helped, either. I'm about to restore everything using an ODIN image to complete stock, and send the unit in for repair.
EDIT:
Here are the things I've tried so far:
I have also tried flashing the ME7 radio firmware, to see if that could do something. So far, nothing.
I have edited the serial_no in the efs folder, no luck as well.
I may restore the bootloader to factory, and update to the ME7 build to see if that can fix the issue.
Restored mmcblk0p10, mmcblk0p13, mmcblk0p14, and mmcblk0p15 with clones from known-good devices obtained via dd when the phone was in recovery.
Used DFS to push a PRL and change the IMEI to the correct one.
Tried EFS Pro to restore an EFS backup made from another phone.
Repartition via a PIT file.
Factory restore of VRUAMDK via ODIN.
Flashed VRUAME7 radio firmware.
I fixed mine with this app:
https://play.google.com/store/apps/details?id=com.amoopa.samservicemode
doom82 said:
I fixed mine with this app:
https://play.google.com/store/apps/details?id=com.amoopa.samservicemode
Click to expand...
Click to collapse
I've had that app. Was yours a Verizon S4? What did you change to fix it?
bump. anyone have any advice?
EFS problem?
I'm not sure if I'm having a similar EFS problem...
I factory restored then rooted with the all in 1 kit. Periodically I see a message and big red X that says "please install sim card"
I'm getting a terrible delay from hitting call to when it actually connects - sometimes it won't connect at all. I have to reboot phone to get voice calls but data works fine, which makes me think its not EFS...
sound familiar to anyone?
huffbuck said:
I'm not sure if I'm having a similar EFS problem...
I factory restored then rooted with the all in 1 kit. Periodically I see a message and big red X that says "please install sim card"
I'm getting a terrible delay from hitting call to when it actually connects - sometimes it won't connect at all. I have to reboot phone to get voice calls but data works fine, which makes me think its not EFS...
sound familiar to anyone?
Click to expand...
Click to collapse
Then why post in a thread about EFS issues?
Rikairchy said:
Then why post in a thread about EFS issues?
Click to expand...
Click to collapse
By ruling things out, I can focus on other areas.
Since that didn't work, it appears the purpose of the post and its title are merely to give your life meaning...
huffbuck said:
By ruling things out, I can focus on other areas.
Since that didn't work, it appears the purpose of the post and its title are merely to give your life meaning...
Click to expand...
Click to collapse
I thought you had already eliminated the EFS as an issue. It sounds like you need a new SIM card. My phone did that before I received a new one
EFS Problem here also
I have a similar problem. I can surf the web in 4G and on Wi-Fi, but when I attempt to make a call, I get "Service Unavailable" and all my inbound calls go to voicemail. So, no voice calls for me. I called verizon, and they gave me a new SIM, but I still have the same issue.
IMEI and IMEI SV match the back of the phone:
Fix:
> Settings > Accounts > Backup and reset
> Factory data reset
i restored back to stock. verizon sent me a new sim and refurb phone.
installed the new sim in old phone and it said could not activate...
thoughts?
huffbuck said:
i restored back to stock. verizon sent me a new sim and refurb phone.
installed the new sim in old phone and it said could not activate...
thoughts?
Click to expand...
Click to collapse
Restoring back to stock by loading the original image (unrooting) did NOT work for me.
Restoring to defaults via settings cured my problems.
n0ah_fense said:
Restoring back to stock by loading the original image (unrooting) did NOT work for me.
Restoring to defaults via settings cured my problems.
Click to expand...
Click to collapse
I have also done a full reset via the OS, the recovery menu, ADB, and restoring the update firmware using ODIN
Rikairchy said:
I have also done a full reset via the OS, the recovery menu, ADB, and restoring the update firmware using ODIN
Click to expand...
Click to collapse
Bumping for any help anyone can provide...
Odin packages do not fix the efs partition. The efs partition is where the phone's information is stored. Like your unique imei number. Without said number the phone cannot be activated at all. There are paid services available that will fix it for a fee(Don't pm me... You have Google. Use it)
You can try to do an nv data reset but I doubt that will work either because that relies on the idea that you just messed up something in your NV data and not fully deleted the partition.
To do nv data reset you need to get into your touchwiz hidden menu. Can't access hidden menu? You need to enable it(Google).
Hidden menu is huge with tons of submenus. I won't be walking you through any of it specifically. But here are some dialer codes. For more... Google.
*#06# shows if your IMEI is still there
*#1234# show hardware and software version
*#*#4636#*#* test mode. Set preferred network mode. Enable disable radio. Change band. Etc
*#7780# and *2767*3855# factory reset
*#197428640# and *#0011# and *#9090# and *#2263# and *#27663368378# service menu (through this you can generally access the entire hidden menu by hitting menu button and selecting back until you are at the root of the menu)... Navigating said menu is on YOU.
*#2263# rf band select
*#7284# UART MODEM PDA selection
Not trying to be giant **** or anything but that's why there are EFS warnings&posts. Also why some root users shouldn't really have root( / ) access.
sent from my Verizon Galaxy sIV
I'm in a similar situation.
Empty EFS folder (No Backup)
Because of this it is stuck in Factory Mode.
I was able to freeze factory mode through TiBu but the only things i haven't been
able to fix are my lock screen and power menu. (no lock screen/power menu)
I've tried every fix i was able to dig up on here but no luck. :\
Any suggestions would be appreciated
I recently rooted my i527 then unlocked it for use on T-Mobile, And it was working just fine, Getting Signal and EDGE, So earlier this morning I took out my sim card and rebooted the phone a few times, Changing the APN from epc.tmobile.com to fast.tmobile.com thinking that was going to get me from going from EDGE to 4G or LTE... Yeah Right! Little did I know, It requires a lot more than just changing the APN.. But thats beside the point.
Anyway, While I was taking my sim out and rebooting, After once or twice of doing this, The phone would not come up with T-Mobile signal AT ALL. After a while of just blankness it would pick up What Im guessing is WCDMA signal or something, But not T-Mobile Active signal like it was doing just fine before. So after 20 or so reboots (thinking that was the problem), And looking around, I noticed that the phone is not issuing a IMEI number. Not in settings, and not *#06# either. The IMEI number has been lost. When I go to settings to view it in About Device it just says "Unknown". I'm assuming this is my problem, Once I get the phones IMEI number back, It will pick up T-Mobile signal again.
At the beginning of this, I was simply trying to get high speed data on the device.. Now I can't even make and receive phone calls. :crying: Any help on how to recover the IMEI would be great, and highly appreciated.
Thanks
Araltd said:
I recently rooted my i527 then unlocked it for use on T-Mobile, And it was working just fine, Getting Signal and EDGE, So earlier this morning I took out my sim card and rebooted the phone a few times, Changing the APN from epc.tmobile.com to fast.tmobile.com thinking that was going to get me from going from EDGE to 4G or LTE... Yeah Right! Little did I know, It requires a lot more than just changing the APN.. But thats beside the point.
Anyway, While I was taking my sim out and rebooting, After once or twice of doing this, The phone would not come up with T-Mobile signal AT ALL. After a while of just blankness it would pick up What Im guessing is WCDMA signal or something, But not T-Mobile Active signal like it was doing just fine before. So after 20 or so reboots (thinking that was the problem), And looking around, I noticed that the phone is not issuing a IMEI number. Not in settings, and not *#06# either. The IMEI number has been lost. When I go to settings to view it in About Device it just says "Unknown". I'm assuming this is my problem, Once I get the phones IMEI number back, It will pick up T-Mobile signal again.
At the beginning of this, I was simply trying to get high speed data on the device.. Now I can't even make and receive phone calls. :crying: Any help on how to recover the IMEI would be great, and highly appreciated.
Thanks
Click to expand...
Click to collapse
If you still have the unlock code try reseting the phone using kies... then see if your imei comes back..
Used ODIN to install correct ROM. This might help.
Get your officla ROM from http://www.sammobile.com/
azpatterson3 said:
SamMobile still doesn't have AT&T sgh-i527 firmware. Use kies to recover your phone or odin with the posted firmware on this forum. Kies would be the safest.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
please let us know if you can get it to work and how you did it.
Used wanam xposed for [email protected] .
Sent from my GT-I9205 using Tapatalk
I tried to flash using the bootloader option in ODIN with the MD5 File from this thread http://forum.xda-developers.com/showthread.php?t=2558602 in which the flash was successful, HOWEVER No IMEI Recovery.. The baseband and build number changed but the IMEI still says Unknown.
Does any one have any solution? Any idea on how to recover the IMEI?
Thanks
Araltd said:
I tried to flash using the bootloader option in ODIN with the MD5 File from this thread http://forum.xda-developers.com/showthread.php?t=2558602 in which the flash was successful, HOWEVER No IMEI Recovery.. The baseband and build number changed but the IMEI still says Unknown.
Does any one have any solution? Any idea on how to recover the IMEI?
Thanks
Click to expand...
Click to collapse
Try flashing the modem for your phone.
use odin
Araltd said:
I tried to flash using the bootloader option in ODIN with the MD5 File from this thread http://forum.xda-developers.com/showthread.php?t=2558602 in which the flash was successful, HOWEVER No IMEI Recovery.. The baseband and build number changed but the IMEI still says Unknown.
Does any one have any solution? Any idea on how to recover the IMEI?
Thanks
Click to expand...
Click to collapse
You will need Microsoft .NET Framework v4.0 installed on your computer Use efs professional on your computer found here http://forum.xda-developers.com/showthread.php?t=1308546
make sure you have root and install busybox on phone. run the EFS Professional exe file from the downloaded file from link i posted there will be a pop up window with three options pick the efs professional tab give it time to connect you will need to give permission on phone for adb if all done right it will say ready on program. across top of the program there will be four tabs click the qualcomm tab now there will be more options click on qualcomm nv tools tab let it connect. now there will be a new window for qualcomm nv tools hit the connect button now you will see your imei at bottom if your imei is not there put it in imei box and then click the write tab. hope this helps.
I've messed up my device after flashing using qpst. Now my imei is gone, fortunately i can still use my sim and access 3g network. Problem is i cant use 4g. I suspect its because of the missing imei. How do i solve this problem? Another problem of mine is my device can't recognized by my pc hence i can't use adb to fix. I tried using via adb wifi but i can't still figure it out. Someone please help me!
If you had lost IMEI, your phone would not connect to network at all. I think you have other problems....
gigiotd said:
If you had lost IMEI, your phone would not connect to network at all. I think you have other problems....
Click to expand...
Click to collapse
What do you mean? Could you provide more info? What do you think should i do?
whatpigs said:
What do you mean? Could you provide more info? What do you think should i do?
Click to expand...
Click to collapse
I think the problem is with your network operator, not with your phone
whatpigs said:
I've messed up my device after flashing using qpst. Now my imei is gone, fortunately i can still use my sim and access 3g network. Problem is i cant use 4g. I suspect its because of the missing imei. How do i solve this problem? Another problem of mine is my device can't recognized by my pc hence i can't use adb to fix. I tried using via adb wifi but i can't still figure it out. Someone please help me!
Click to expand...
Click to collapse
Dial *#06# to confirm.
it should show you 2 IMEI,
if it shows, then your problem is not with IMEI
gigiotd said:
If you had lost IMEI, your phone would not connect to network at all. I think you have other problems....
Click to expand...
Click to collapse
e2vinay said:
Dial *#06# to confirm.
it should show you 2 IMEI,
if it shows, then your problem is not with IMEI
Click to expand...
Click to collapse
What do you think is the problem? I can't get 4G to work after i've lost my imei.
I've tried going back to stock but imei still not back.
whatpigs said:
What do you think is the problem? I can't get 4G to work after i've lost my imei.
Click to expand...
Click to collapse
This confirms you've lost your IMEI
Do you have backup of EFS partition ? you said in your OP that you tried to flash using qpst, did you ever take backup of your EFS? if yes then I can guide you to restore.
if no backup then it's hard to get it. You can use other phones EFS to restore and change IMEI to yours. since it contains IMEI of others, it's most likely that no one shares it.
PS : Not only 4G you cannot connect to ANY network if you've lost your IMEI.
e2vinay said:
This confirms you've lost your IMEI
Do you have backup of EFS partition ? you said in your OP that you tried to flash using qpst, did you ever take backup of your EFS? if yes then I can guide you to restore.
if no backup then it's hard to get it. You can use other phones EFS to restore and change IMEI to yours. since it contains IMEI of others, it's most likely that no one shares it.
PS : Not only 4G you cannot connect to ANY network if you've lost your IMEI.
Click to expand...
Click to collapse
I still have network signal but its only 3G. I can still receive texts. Unfortunately, i don't have a backup because adb dont work in this phone. It used to work but after getting bootloop, it never show the usb option notification and can't be read in pc. There is a tutorial out there to restore imei and my adb on this device dont work so i can't do anything.