[Q] LG 4x p880 IMEI null sim card problem - LG Optimus 4X HD

Hi folks, I have problem with my LG optimus 4x p880 phone. Today phone doesnt read sim card. I discovered that when i asked my imei number via *#06#, it said "null". So my phone cannot connect the operator. How can I fix imei null problem? Thanks :good:

none knows?

I had the same problem...
In my case, as far as i can tell is hardware related.
At first I thought it as a bad flash, so i tried (after reading every possible threads) to flash a stock kdz.
I cant flash the kdz, because stucked in 10% (error 207).
So i opened the phone, checked if the connections were ok.
Didn't work... Still stucked in 10%.
So i used brute force, and start to press the phone very hard near the edges, near the the sim. Magically the lg flash tool pass the 10% and flashed the stock rom.
But the null imei and baseband persisted.
I tried once again the brute force and it works, but i cant turn off or reset the phone, because the baseband and the imei return to unknown
The connection take some time to occur.
Hope that can help.

sergiohinniger said:
I had the same problem...
In my case, as far as i can tell is hardware related.
At first I thought it as a bad flash, so i tried (after reading every possible threads) to flash a stock kdz.
I cant flash the kdz, because stucked in 10% (error 207).
So i opened the phone, checked if the connections were ok.
Didn't work... Still stucked in 10%.
So i used brute force, and start to press the phone very hard near the edges, near the the sim. Magically the lg flash tool pass the 10% and flashed the stock rom.
But the null imei and baseband persisted.
I tried once again the brute force and it works, but i cant turn off or reset the phone, because the baseband and the imei return to unknown
The connection take some time to occur.
Hope that can help.
Click to expand...
Click to collapse
Does it work everytime you press the phone? When do you start to press exactly? (e.g. during start up?)
What 's the exact location to press?

dannychow said:
Does it work everytime you press the phone? When do you start to press exactly? (e.g. during start up?)
What 's the exact location to press?
Click to expand...
Click to collapse
Not every time, but work 1 in 5 times. With the phone off i remove the back cover and start pressing near the edges, and near the SIM, then i turn on the phone still pressing. I keep pressing until the phone signal appears. Normally i wait 5 minutes, because sometimes when the phone starts the baseband is still unknown, but then, like magic the signal returns and the baseband and imei appears.
However, when i turn off/restart the phone the issue returns. (very annoying). Hope it works with you.

Need Help "LOST IMEI and Baseband Unkonwn"
I was using Euporia 5.0.1 on LG 4x
I received update notification and I downloaded Update.zip ( which included to 5.1)
By mistake i flashed the zip directly from CWM ( without Formatting any partition )
after restarting there was no IMEI
Following things I have tried
1) Trying to flash Original V20C KDZ. via LG Flash Tool. ( I think it checks for IMEI , and that's why stuck in between)
2) Use LG Software Update tool. ( also can't progress with IMEI)
3) Flashed Original V20c Flashable zip from CWM (But it didn't restored my IMEI)
4) Contacted LG Service Center, and They say You need to change whole Motherboard. ( I was Shocked to know that )
:crying:
If anybody went to same problem. and resolved .
Please Guide me.

Related

Bricked after " Network Unlock"

Hello everyone.
I installed CWM 5.0.2.6 and then Cyanogen mod 9 succesfully. Then I changed it to "MIUI TOCAi 0.1.4" and it was working fine although it could not find my network. I tried searching manually but without success (it kept on showing up that it's not able to register to the network im choosing and that i should try again later.) It had simlock before so I tryed to unlock it using this thread "http://forum.xda-developers.com/showthread.php?t=1204705". I got the code etc but I didnt know where to type it in. I turned the phone off and on hoping that the menu with this code request would pop out but it didnt so I replaced the sim card with another one. It still didnt pop out so I replaced it with the previous one and the phone bricked.
Im not able to get to CWM or to the system at all. Im only able to get to DL mode. I tried to unbrick it using this method "http://forum.xda-developers.com/showthread.php?t=1071970" and few similar ones. I used multi and single package but without success.
The simlock was for "3" network. Tryed O2 and Vodafone simcards.
Is there any way to unbrick it without going to the service?
I'm going to post youtube links to show you how it looks in just a few minutes.
Part 1 : http://www.youtube.com/watch?v=oNln0KJQ-0o&feature=youtu.be
Part 2 : http://www.youtube.com/watch?v=urRAhOq0OCw&feature=youtu.be
Part 3 : http://www.youtube.com/watch?v=EU-EshQdj7E&feature=youtu.be
Looks like your efs partition (either stl5 or bml5) got corrupted. This cannot be fixed by flashing roms or stock roms, since its a sepparate partition. Network Unlocking the ace might result in a brick specially if not done from stock firmware.
i bricked my gio after network unlock too, it was due to the efs partition being messed up, i couldnt get it to boot normally or recovery (screen flashes then dies) but download works, and odin didnt solve anything, so i sent it in to samsung and got a new gio
to sum it up, you now have a nice paperweight

No Sim Detected LG Optimus 2x :(

Hi
My phone suddenly stopped detecting all sim cards ( I have tried various working sims ).
It is running CM 7.2 and has been running cm 7.2 for a few months with no problems.
Today I took out the sim and put it back in to reboot, all was fine. I went to shower, came back and the sim suddenly stopped being detected.
I have tried to google but it seems most problems are to do with flashing a new rom and having the sim not work, my case is that the rom has been the same for a few months.
I have tried to flash different roms and I still have the same problem. I have a gut feeling it is the hardware that reads the sim that is faulty.
I have read something about a baseband, I dont know what that is but if it helps, when i go to the settings and click on 'about phone'
It says there is a baseband and it is version something. There are no question marks or anything like that.
I appreciate the help and would love some more troubleshooting suggestions.
The worst case scenario is unrooting it, flashing stock rom and send it back to warranty. I actually don't know how to do that so if anyone has a guide lying around please link me on that.
I have similar problem with new boot loader.
Download getril app from play store and see if your baseband is OK. If not, download and flash matching baseband from development thread. You will loose all personal data and your apps after flashing. Then download new ril with getril and reboot. Good luck...
This method was no helpful for me. Maybe you will have better luck.
Sent from my LG-P990 using xda app-developers app
asmerito said:
I have similar problem with new boot loader.
Download getril app from play store and see if your baseband is OK. If not, download and flash matching baseband from development thread. You will loose all personal data and your apps after flashing. Then download new ril with getril and reboot. Good luck...
This method was no helpful for me. Maybe you will have better luck.
Sent from my LG-P990 using xda app-developers app
Click to expand...
Click to collapse
Thanks for the reply,
When I first opened getril, it said RIL not found, I did not have one. I downloaded one and then it said RIL does not match. I then redid it on another firmware and it now says RIL and Baseband matches. Is this enough? The only weird thing is the baseband has canada and europe in it. I am from Australia. How do i tell which baseband/ril I need?
cimore000 said:
Thanks for the reply,
When I first opened getril, it said RIL not found, I did not have one. I downloaded one and then it said RIL does not match. I then redid it on another firmware and it now says RIL and Baseband matches. Is this enough? The only weird thing is the baseband has canada and europe in it. I am from Australia. How do i tell which baseband/ril I need?
Click to expand...
Click to collapse
First you flash BB, then download RIL with GetRil. Read completely through BB sticky topic in development section. All answers are there.
http://forum.xda-developers.com/showthread.php?t=1658047
[Baseband][P990] Complete Baseband overview thread
Sent from my LG-P990 using xda app-developers app
You can flash as much as you want, none of that will help. Had same issue once, flashed almost everything there was through SmartFlash, NVflash and all of that. This is what you need to do:
First, remove the battery from your phone. Write down the IMEI. Now boot up your phone, write *#06# and see if the IMEI that pops up is the same as the one you saw behind the battery. If not, let us know and I'll hand you the solution, but first check if the IMEI matches.
Custom40 said:
You can flash as much as you want, none of that will help. Had same issue once, flashed almost everything there was through SmartFlash, NVflash and all of that. This is what you need to do:
First, remove the battery from your phone. Write down the IMEI. Now boot up your phone, write *#06# and see if the IMEI that pops up is the same as the one you saw behind the battery. If not, let us know and I'll hand you the solution, but first check if the IMEI matches.
Click to expand...
Click to collapse
I checked the IMEI and it matches.
I have some extra information if it helps, when I choose a random RIL from getril, the battery might become a ? mark and the sim card not detected error doesnt show anymore, however when I put it back to the original RIL, my battery bar starts showing the 'power left' and also the sim not detecting error shows again.
Custom40 said:
You can flash as much as you want, none of that will help. Had same issue once, flashed almost everything there was through SmartFlash, NVflash and all of that. This is what you need to do:
First, remove the battery from your phone. Write down the IMEI. Now boot up your phone, write *#06# and see if the IMEI that pops up is the same as the one you saw behind the battery. If not, let us know and I'll hand you the solution, but first check if the IMEI matches.
Click to expand...
Click to collapse
I get the SIM Toolkit Incompatible Handset error and then whether I press OK or Cancel, shortly after I lose mobile network access. I've been trying all manner of different things, Smart Flashing, NVflashing, changing basebands, Rils, you name it.
I'm currently on the V30B root ROM http://forum.xda-developers.com/showthread.php?t=2064793 and the Ril matches the baseband from that ROM, but that hasn't helped either. So I went and check the in phone and behind battery IMEI and they are different! I'd love to hear what your solution to this is!
Custom40 said:
You can flash as much as you want, none of that will help. Had same issue once, flashed almost everything there was through SmartFlash, NVflash and all of that. This is what you need to do:
First, remove the battery from your phone. Write down the IMEI. Now boot up your phone, write *#06# and see if the IMEI that pops up is the same as the one you saw behind the battery. If not, let us know and I'll hand you the solution, but first check if the IMEI matches.
Click to expand...
Click to collapse
My problem was no service and IMEI unknown... Never managed to solve it. Reverted to old bootloader and problem solved.
Sent from my LG-P990 using xda app-developers app
IMEI Solution
If IMEI does NOT match, you will need to do this:
Check if you can get in a menu by typing 1809#*990#. If you can't, you will need to use a GB ROM (I remember I used Homero's GB NVFlash as I was on ICS bootloader and couldn't get access to it on ICS). Follow these steps if you are sure you can get into the menu:
1) Connect your phone by USB.
2) Enter 1809#*990# in dialer.
3) Select Port Setting -> Select CP USB
4) Install a program called Hyperterminal on your PC and open it. In COM settings select same port as in device manager -> LGE Mobile USB Seial Port (should be 115200)
5) Type at%imei and it should respond by saying OK
6) Now type at%imei and it should now display your current IMEI number.
7) Type at%imei=XXXXXXXXXXXXXXX where X is your original IMEI number.
8) Reset phone.
You might have to reboot your phone after step 3. But see if it works without.
I have been thinking that this is a hardware issue, I have not changed a single setting/rom/baseband at all, the sim just wasnt detecting when I came back to my phone. The rom and settings were the same for a number of months.
I am now going to give it in to warranty, however it only has 1 month left. I have tried to install the stock firmware but with no luck..
I found a rom to flash for my region, it is a zip file but when I try flash it with Clockworkmod, it says installation aborted....
Shouldnt I be able to flash the roms with CWM? The file is a zip file just like the CM7.2 rom I flashed. Do I need nvflash instead? I found the rom here :
http://forum.xda-developers.com/showthread.php?t=1852112 (the download links were removed so I googled the exact same rom)
I was also told that if I just use the LG update tool, it sohuld automatically update the phone to stock firmware AND unroot it, only that the update tool gives me an error. Whats the best approach guys?? I need to get this fixed before my warranty goes.
Custom40 said:
If IMEI does NOT match, you will need to do this:
Check if you can get in a menu by typing 1809#*990#. If you can't, you will need to use a GB ROM (I remember I used Homero's GB NVFlash as I was on ICS bootloader and couldn't get access to it on ICS). Follow these steps if you are sure you can get into the menu...
Click to expand...
Click to collapse
Bother. The 1890 etc didn't work on the p990 in android 4.0.4 (nor on my Nexus 4 incidentally), so I guess I'll have to flash down to GB. I'll let you know if I can get it to work, thanks!
[-Stash-] said:
Bother. The 1890 etc didn't work on the p990 in android 4.0.4 (nor on my Nexus 4 incidentally), so I guess I'll have to flash down to GB. I'll let you know if I can get it to work, thanks!
Click to expand...
Click to collapse
Trust me, you can try whatever you want. This is the only way to get it working. I spent hours and hours to figure this out, so I guarantee you it will work.
please,please can u explain better, my imei and baseband is not showing in setings in my phone., i wanted to downgrade into gingerbread stock rom with smart flash, when this happend to me and my sim card its not recognized,. so please explain better with video or pictures steb by step how to apear the sim card, thankyou
interr said:
please,please can u explain better, my imei and baseband is not showing in setings in my phone., i wanted to downgrade into gingerbread stock rom with smart flash, when this happend to me and my sim card its not recognized,. so please explain better with video or pictures steb by step how to apear the sim card, thankyou
Click to expand...
Click to collapse
Your imei should not show in settings, it should show in the back of your battery and when you dial : *#06# into the phone (where you dial numbers for calls).
Cant help you with baseband.
OP here, I am trying to unroot my phone and put stock firmware to get warranty to fix the simcard reader ( i believe it is a hardware issue ).
If I use nvflash and flash any stock firmware I can find on the internet, will that be OK? I have a feeling each region of optimus 2x has slight differences in firmware, eg swedish stock roms and australian stock roms may differ in the default applications etc.
Will it be ok to just install any kind of stock rom for my warranty? Help would be appreciated my warranty is running out in less than a month now.
I also tried to flash stock firmware with CMW, it didnt work. I am about to try NVflash, so I went into greater detail in page 1 but no one replied yet. If you guys know please help. I am more familiar with CMW than NVflash. I have not used NVflash yet.
hahah after 2 sleeples nights i menage to restore my sim to be recognize ,whit this metod,.. NFlash rulles ))
http://www.ibtimes.co.uk/articles/408044/20121124/unbrick-tool-lg-optimus-p990.htm
http://androidadvices.com/unbrick-lg-optimus-2x-p990-android-phone-tutorial/
http://progmaq.es/cm10/progmaq-default-cm-10-20121105.7z
http://progmaq.es/cm10/progmaq-default-cm-10-20121105.7z
this is also the best metod for unbricking your phone, .
INSTALLATION:
ATTENTION
The flasher with NVFlash clears all memory, including the Internal SD., so make a backup if u can..
Download this file: http://bayfiles.com/file/yKZL/eGZ31A/driver.rar The pack includes the APX driver (folder driver)
http://www.putlocker.com/file/4CEDEB7E0893B6F1
1.- Remove the battery to the phone.
2.- Press and hold Vol- and Vol+ and without releasing the 2 keys connect the USB cable to the PC
3.- Go to the progmaq-default-cm-10-20121105 folder and run flash icon... folow instruction., wait wait wait Enjoy!
Custom40 said:
1) Connect your phone by USB.
2) Enter 1809#*990# in dialer.
3) Select Port Setting -> Select CP USB
Click to expand...
Click to collapse
I managed to get an old CM7 install back on the p990,but the above is still not working for me :/
After I finish typing in 1809#*990# in dialer, nothing happens. If I press the green phone handset icon to dial that number it comes up with an error message of "Mobile network not available".
Any further advice? Thanks.
Okay, I failed at reading comprehension – it has to be an LG Gingerbread ROM for this code to work, NOT a CM-based one!
Trying one from somewhere-I-cannot-link-to-yet
Success! Once I was back on the original stock LG Gingerbread ROM, I could reset the IMEI and make/receive calls again using this method. Thank you very much!
Now all flashed back onto a nice "working" nightly CM10.1 and a very happy little device.
Many thanks all.
Hi,
Anyone have a working link to "progmaq-default-cm-10-20121105 ". My Optimus 2x has been bricked as well, and can't find any other version of this on Google unfortunately
Appreciate all help.

Network, Power, Lock Screen Problem!

Hi guys, I am officially screwed.
I had stock rom (unrooted) on my Note till yesterday. Suddenly it was just showing the GT N7000 screen and wont go forward even upon restart. Even the Samsung logo wouldn't appear on restart. So I went into recovery mode, installed PhilZ-cwm6 - Safe Stock Based Kernel from SD card, and wiped data, cache and dalvik cache and restarted without any problem. (Ofcourse all my data was gone but no problem)
After restart the Network signal was good, Data was working (could send and receive whatsapp etc.) ,however when tried to make a call it displayed "Not registered on network error".
On pressing the power button the screen turns off but does not get locked, main page is shown as it on pressing the home key.
There is no power menu too. The device would just turn off completely on pressing power button to access the power menu (Menu with restart and other options).
I flashed with custom Paranoidandroid rom but it displayed no network signal, so I tried flashing stock rom again with ODIN but the above problems still persist. Also, strangely there was no setup screen on starting the phone (which has always come on flashing a rom).
Read some where about keystr file being missing. Checked the /efs/imei/keystr it all there with text as ON in it.
Please help. I have messed up this phone many a times but was always able to recover it thansk to xda threads. I am even taking a leave from office for today.
Check your IMEI. Does it start with 0049...? The symptoms you wrote are typical for a developer IMEI.
ThaiDai said:
Check your IMEI. Does it start with 0049...? The symptoms you wrote are typical for a developer IMEI.
Click to expand...
Click to collapse
Yeah it does...am I in trouble?
tshrjain said:
Yeah it does...am I in trouble?
Click to expand...
Click to collapse
Depends...
Your IMEI isn't the original anymore (remove battery and you'll find a sticker with your original one). This happens sometimes - I never saw an explanation why and when - when you install a Custom Rom.
If you didn't backup your /efs-partition you can't get it back by yourself. There is a member who offers a solution (he connects remotely to your device/PC and restores the old number) for small money (see cvxcvx.pl).
Workarounds:
- Change your SIM Pin every time after a reboot (you can simply use your old pin as new pin again, this works). Then you'll have a working SIM and network connection.
- On a TW based ROM you'll have to use an android.policy.jar from a leaked ROM (XXLSC). I used this because it doesn't check the IMEI and so you do not have the restrictions like you wrote: no SIM Pin request, no menu, immediate Power shutdown. I used this with my Pristine Roms because I have this developer IMEI since a repair in Thailand...
- Switch back to GB, it doesn't have the IMEI check too.
My actual workaround: disabled SIM Pin and using my own build "Pristine CM10.1".
ThaiDai said:
Depends...
Your IMEI isn't the original anymore (remove battery and you'll find a sticker with your original one). This happens sometimes - I never saw an explanation why and when - when you install a Custom Rom.
If you didn't backup your /efs-partition you can't get it back by yourself. There is a member who offers a solution (he connects remotely to your device/PC and restores the old number) for small money (see cvxcvx.pl).
Workarounds:
- Change your SIM Pin every time after a reboot (you can simply use your old pin as new pin again, this works). Then you'll have a working SIM and network connection.
- On a TW based ROM you'll have to use an android.policy.jar from a leaked ROM (XXLSC). I used this because it doesn't check the IMEI and so you do not have the restrictions like you wrote: no SIM Pin request, no menu, immediate Power shutdown. I used this with my Pristine Roms because I have this developer IMEI since a repair in Thailand...
- Switch back to GB, it doesn't have the IMEI check too.
My actual workaround: disabled SIM Pin and using my own build "Pristine CM10.1".
Click to expand...
Click to collapse
Thanks, I guess I'll just need to take it to service centre. Could you please tell me how to go back to Stock ROM and Kernel so that there are no counters or root that may make Samsung ppl not repair the phone.
I was able to get back Lock screen and Power menu using instructions to recover imei here:
http://forum.xda-developers.com/showthread.php?t=1264021
with little modifications to it as I could not find original file.
However, my IMEI is still the fake one and still can't register to network.
Also the set up screen appeared on doing the above procedure.
Changing SIM Pin isn't helping in registering to network.

[Q] many problems now no network

I have a p925g rogers canada. It had a problem while updating and was bricked, no lg logo, no vibrate, nothing.
I managed to revive it a month later using Smartflashtool and lgp925_ap.bin and lgp925_CP.fls and that got me the logo back but the phone would reboot in less than one second of logo appearing.
So I then used LG mobile support tool and did a recovery, it recognized the imei in download mode and now the phone is up and running on 4.0.4. with baseband omap4430/xmm6260 and build number is ICS and software version is p925g30c
This phone is unlocked. I put in a koodo sim card and no luck. I get "No service"
Under phone identity i get the imei, the imei sv, they are all there but my phone number is "unknown" and I can never connect to the mobile network.
I've read many threads on here, about 12 hours now, and I'm seeing "flash baseband" etc. I dont even know how to do that with an LG. I've done many sammy's and used odin and cwm/twrp so I do have some experience with the process.
I'd appreciate any help with this. Please don't point me to a tread that just says "flash a new baseband" I don't know how lol.
sorry in advance.
Did you set up your APN? How to do that and how to flash
http://forum.xda-developers.com/showthread.php?t=2195753
drastic00 said:
Did you set up your APN? How to do that and how to flash
http://forum.xda-developers.com/showthread.php?t=2195753
Click to expand...
Click to collapse
yes apn setup changes nothing put in all koodo settings and no signal, and like i said on other thread lgflashtool craps out after 5 secs
notsogentle said:
yes apn setup changes nothing put in all koodo settings and no signal, and like i said on other thread lgflashtool craps out after 5 secs
Click to expand...
Click to collapse
would you believe that I re-did all the apn and after about an hour, it started working,
Couldn't have done it without XDA
PS I hate cellphones.
Which is why I love them.
lol
Hmm sometimes rebooting a few times after an update helps things work better. Well, good it works.
still wont do messaging, and drops the network alot, also getting "Reorganizing internal processes" when I try to call but it goes thru after a few tries. I may try a custom rom if I can ever get into recovery mode (it wont let me)
correction, mms is working sometimes just like calls. Factory reset a few times. no difference.
edit - no data whatsoever. All apn setting correct, all settings rechecked. network unavailable.
no IMEI & no SIGNAL (network)
Could someone help me?
I flashed my LG THRILL 4G (AT&T) with official stock P925 V30B rom (with SMARTFLASH) but lost the IMEI and no NETWORK. :crying:
What can I do now?
Thanks!!
Use Flash Tool. See link above.

[Q] Null IMEI number

i really need help
my phone was a legit purchase but now all of a sudden the IMEI number is null and the phone does not have any network
through the day
sometimes it fixes itself and the network is available and the IMEI number is visible and all of a sudden it abruptly it goes null IMEI number and the network goes away
please help me how to fix this, I am facing this problem since 3 days
I have tried searching alot across this forum and others but no one seems to have a solution, please help!!!
Try re flashing kdz file
Sent from my Optimus 4X HD using XDA Free mobile app
Need Help "LOST IMEI and Baseband Unkonwn"
I was using Euporia 5.0.1 on LG 4x
I received update notification and I downloaded Update.zip ( which included to 5.1)
By mistake i flashed the zip directly from CWM ( without Formatting any partition )
after restarting there was no IMEI
Following things I have tried
1) Trying to flash Original V20C KDZ. via LG Flash Tool. ( I think it checks for IMEI , and that's why stuck in between)
2) Use LG Software Update tool. ( also can't progress with IMEI)
3) Flashed Original V20c Flashable zip from CWM (But it didn't restored my IMEI)
4) Contacted LG Service Center, and They say You need to change whole Motherboard. ( I was Shocked to know that )
:crying:
If anybody went to same problem. and resolved .
Please Guide me.
Jatin Patel said:
I was using Euporia 5.0.1 on LG 4x
I received update notification and I downloaded Update.zip ( which included to 5.1)
By mistake i flashed the zip directly from CWM ( without Formatting any partition )
after restarting there was no IMEI
Following things I have tried
1) Trying to flash Original V20C KDZ. via LG Flash Tool. ( I think it checks for IMEI , and that's why stuck in between)
2) Use LG Software Update tool. ( also can't progress with IMEI)
3) Flashed Original V20c Flashable zip from CWM (But it didn't restored my IMEI)
4) Contacted LG Service Center, and They say You need to change whole Motherboard. ( I was Shocked to know that )
:crying:
If anybody went to same problem. and resolved .
Please Guide me.
Click to expand...
Click to collapse
I dont think that fleshing update.zip had anything to do with losing IMEI since you cant update 5.01 to 5.1 without wiping u will just have many bugs but u wont brick u device.I think it is hardwer problem my friend on his lg 4x have similar problem (no IMEI and cant connect wifi to any network).

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