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P970 can't use any SIM cards

My Optimus Black was working fine for about 3 months. Not sure what happened, but it started showing no network/signal. It's a completely unlocked phone. I tried a friend's SIM card and the first time it wouldn't work, but I tried again a few days later and it worked but had a pretty bad signal. Now it won't work no matter how many times I try. I even bought a new SIM card/number (I live in Asia) and it won't work.
I had Android 2.3 and thought maybe something got corrupted, so I wiped and reinstalled, but same problem. I wiped again and installed Mokee OS, and same issue. (By the way, after using Android 2.3, switching to Mokee is so much nicer, although it's in beta and still has some bugs.)
The 6 gold SIM connectors look fine. I used a SIM app and it recognizes the SIM card and its carrier, so I think the card is being read OK.
I live on a small island, so sending the phone back to LG or taking it back to where I bought it (Bangkok) would be a huge hassle. Does anybody have any ideas on things to try to fix this? I'd really appreciate the help.

Can you return to stock rom (rooted or not, as you want) and then tell me if you see something write in LG lockscreen (I'm thinking about LG Security Error) ?
Sent from my LG-P970 using xda premium

i think its imei deleted.
please look into menu/settings/apout phone/status/imei
it is normal?

Sobralobo said:
Can you return to stock rom (rooted or not, as you want) and then tell me if you see something write in LG lockscreen (I'm thinking about LG Security Error) ?
Sent from my LG-P970 using xda premium
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Click to collapse
The first time i wiped the phone i went back to Android 2.3, but all that the lock screen said was "No service". Usually it says "DTAC" when I have service. Is that what you mean?

agritux said:
i think its imei deleted.
please look into menu/settings/apout phone/status/imei
it is normal?
Click to expand...
Click to collapse
I think everything is normal. It has an IMEI number. It is 15 numbers. It also has an IMEI SV number that is 16 numbers.

gavin310 said:
The first time i wiped the phone i went back to Android 2.3, but all that the lock screen said was "No service". Usually it says "DTAC" when I have service. Is that what you mean?
Click to expand...
Click to collapse
No if the SIM card isn't used that phrase is normal. I got a problem like you but it was written "LG Security Error" and I had to use Smartflash tool erasing cp and then recover my imei. But it doesn't seems that you have the same problem. "/
Sent from my LG-P970 using xda premium

Sobralobo said:
No if the SIM card isn't used that phrase is normal. I got a problem like you but it was written "LG Security Error" and I had to use Smartflash tool erasing cp and then recover my imei. But it doesn't seems that you have the same problem. "/
Sent from my LG-P970 using xda premium
Click to expand...
Click to collapse
thanks for trying hopefully someone will have something else to try...

Wait...before try a sim without a pin code
If it doesnt works then flash with smartflashtool and recover your imei (threads of how to available)

theaks30 said:
Wait...before try a sim without a pin code
If it doesnt works then flash with smartflashtool and recover your imei (threads of how to available)
Click to expand...
Click to collapse
Thanks. I'm going to try flashing the stock rom. I can't find any good threads about recovering the IMEI. Everything I am finding is about Samsung. Do you have any links you can share?

Try factory reset

sekhar13515 said:
Try factory reset
Click to expand...
Click to collapse
I just flashed the stock rom. android 2.2.2... still no service

here you go
http://forum.xda-developers.com/showthread.php?t=1338397
problem should be solved

theaks30 said:
here you go
http://forum.xda-developers.com/showthread.php?t=1338397
problem should be solved
Click to expand...
Click to collapse
Awesome, thanks for this. I'm going to give it a try now... I'll report back in a bit

passeth
theaks30 said:
here you go
http://forum.xda-developers.com/showthread.php?t=1338397
problem should be solved
Click to expand...
Click to collapse
I flashed the new rom and erased the CP data. still no phone service but i haven't reset the IMEI yet. having trouble with that step. i'm not sure if this is going to work though, my problem seems different. my phone can see my SIM card, but i just don't have any phone service with any SIM card. the sim cards work fine in other phones.

try a sim without pin code
and flashing with smartflashtool (erase entire cp) doesn't works?

theaks30 said:
try a sim without pin code
and flashing with smartflashtool (erase entire cp) doesn't works?
Click to expand...
Click to collapse
i don't think my SIM has a pin code? I'm not sure though? There's only one type of SIM you can get here in Thailand. You buy the SIM from a phone shop or 7-11 and add credits to it. I've never seen any other type of SIM card.
Yep, I used smartflashtool and erased the entire CP (had to enable with Windows Enabler). Now there is no IMEI and still "No service".

Retry or by changing baseband now...there was a tutorial in optimus3D threads i think
Or in this one itself
Change the baseband

"no sim inserted" error after CM 10.2 experimental

hi
as the title says, i was tryng to update to the latest release of the experimental 10.2 (i had already the first one)
at the reboot...the boot screen sayng "galaxy note" was normal ...but the screen stayed black (but with illumination on )
so i recovered this soft-brick with odin and stock JB rom ...
and now the phone doesn't recognize any sim that i put on
any suggestion?

Suggestion 1: if you unexperienced do not install an experimental Rom
Suggestion 2: check your IMEI if it is your original one or a developer IMEI starting with 0049 or even 00000.

ThaiDai said:
Suggestion 1: if you unexperienced do not install an experimental Rom
Suggestion 2: check your IMEI if it is your original one or a developer IMEI starting with 0049 or even 00000.
Click to expand...
Click to collapse
i tought i was experienced this is the first time that i can't solve a problem
btw the imei seems legit (starts with 3595)
any other clue? é_è

Sometimes it happens to me. I just insert the card once again and that solves the problem.

Abagnale said:
Sometimes it happens to me. I just insert the card once again and that solves the problem.
Click to expand...
Click to collapse
its the first thing that i tried ...and no ...must be a software problem

Angelorpheus said:
its the first thing that i tried ...and no ...must be a software problem
Click to expand...
Click to collapse
i lifted the contacts of the sim slot with a pin...and now works -_-
my fault....thx for the advices

signal help

im having problems with my sim card being able to show when booting my phone, i've used the sim card on a different phone no problem, but ive tried stock and custom roms to see if there was a problem but still no way to find out. ive got a imei number and it shows a circle with a line through it on the status bar.
does anyone have any ideas? i dont wanna buy a new phone could really use any help

josh42666 said:
im having problems with my sim card being able to show when booting my phone, i've used the sim card on a different phone no problem, but ive tried stock and custom roms to see if there was a problem but still no way to find out. ive got a imei number and it shows a circle with a line through it on the status bar.
does anyone have any ideas? i dont wanna buy a new phone could really use any help
Click to expand...
Click to collapse
suggest you check the direction of your sim card insertion, and insert in the correct way
Check this out! Links to useful Guides and " Banned " Documentaries ​

xsenman said:
suggest you check the direction of your sim card insertion, and insert in the correct way
yeah I know which way it goes, im using it in a different phone perfectly fine
Click to expand...
Click to collapse

[Q] my Samsung gt-i9000 wont read sim card

Hi im shure this has been written about before, but I'm trying a new tread
My Samsung galaxy gt-i9000 wont read the sim card, and all the post I've read, says it is most likely software fault,
But I've tryed installing stock software with no luck. I can call emergency calls I can get connected to wifi
Follow this link, as it described what I have done
http://forum.xda-developers.com/showthread.php?t=2770240
Anyone who has suggestion of what I can try?

You've likely lost your imei. If you don't have your efs folder backed up then you're gonna need to flash with odin back to stock.
Sent from my GT-I9000 using Tapatalk

knuckles1978 said:
You've likely lost your imei. If you don't have your efs folder backed up then you're gonna need to flash with odin back to stock.
Sent from my GT-I9000 using Tapatalk
Click to expand...
Click to collapse
Hi and thanks for reply
When I push *#6# I get an imei number, so I guess thats correct.
However, I think I found the problem, it seems that it's missing one of the pins who should connect to the sim. My sim slot has only 5 pins like this:
Top
''
'''
Bottom
But ive seen on pics, there should be
Top
'''
'''
Bottom
I ordered a replacement part of ebay, so I hope this fix it.
Anyone who knows how many pins the sim slot should have?

i9305, boot screen freeze, help :)

Hi everybody!
I've got a little issue with my phone Samsnung S3(gt-i9305), I post a thread here because I don't know what else to do.
The problem is that the phone is freezed on the samsung logo which "flash", as soon as I put on the battery.
- I hold the "power" button for a long while, nothing happens
-I try to launch RecoveryMode(up+home+power), nothing happens
-I try differents battery, nothing happens
My only hope:
I can launch the "download" mode(down+home+power), but if I let the battery in, it return to the flashing logo.
So I have to remove the battery(with the USB on my PC of course) and it work!!
So I'm in download mode, without battery.
But:
- I install my latest stock ROM, about 10 times, nothing happens (Firmware : I9305XXUEMKC_I9305XEFEMK1_XEF (4.3))
- I try to do the previous step with "nand erase all" and "T-flash", nothing happens
... WTF!
Is someone's got any idea of what's going on, and how can I do to save my phone?
I'm still searchiong on the forum, but any help will be so deeeeply appreciated
Thank very much for reading and helping

I'm scratching my head very strong, and I think it may be a power supply problem, maybe the power switch on and off so the phone cannot boot, and that's why it's work when I remove the battery.
Is anybody knows that kind of problem? Do you think I can open my phone and fix the problem?
Thanks

Did u flash any file before this happened? And ur first post. Firstly, the gt-i9305 is NOT the s4. And this is the gt-i9300 forum. Anything u flash here will just lead to ur phone being hard bricked.
Sent from my GT-I9300 using XDA Free mobile app

Jumaqidi said:
Did u flash any file before this happened? And ur first post. Firstly, the gt-i9305 is NOT the s4. And this is the gt-i9300 forum. Anything u flash here will just lead to ur phone being hard bricked.
Sent from my GT-I9300 using XDA Free mobile app
Click to expand...
Click to collapse
Hi, yes I know it's the S3, it was just a mistake sorry, I fixed it.
My phone was rootet and flashed with the last official stock rom samsung I9305XXUEMKC_I9305XEFEMK1_XEF (4.3).
Until now it worked very well!
I begin to prepare myself that my phone is definitly dead :'( but 've got a full copy of my internal Sd on my computer. I would like to get back my contacts, is anybody knows how to open that kind of file: contacts2.db-wal ?
I tried with SQlite bug it didn't work.
And Jumaqidi, I just saw that I missed the line of 9305 Q&A (was just above 9300), very sorry for that, what can I do, must I post another thread in the right section, or I wait until an admin move my thread?
Thanks

Report your own post, use the red triangle, ask a moderator to move it for you.
Sent from my GT-I9300 using Tapatalk