No sim card/invalid sim card issue after flashing into stock rom - Android Q&A, Help & Troubleshooting

I own a Lg G3 sprint ls990.I live in Bangladesh.My device was on android lollipop and it was fine.But due to restart and warming issues i flashed into stock kitkat rom using flashtool.After 91% of flashing a red screen poped up in my device it said "warning; not support qem=0" and in the flashtool app it said failed.But when I pulled out the battery and rebooted my device I saw everything is okay.Then I put on a working sim card and it couldn't detect the sim card.i tried with whole other working sim card but i couldn't detect.I changed my sim slot but that also cannot change the condition.I flashed with other roms but still nothing is happening.When i dial "*#06#" to know my imei it says "connection problem or invalid mmi code".......Now Im badly in need of your help guys.Please,do help guys.

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[Q] [P] Problem after upgrade - sim card not found

Hi there,
a friend of mine just got a used xperia p. He inserted his sim card and it worked.
After that he started the current software update. And here is the point. Right after the update no sim card is recognized any more - always says "please insert sim...".
Service menu says everything except sim is locked with 5 possible tries.
I just made a downgrade using flashtool which seemed to free the phone again according to service menu - but no sim card is detected.
An update using flashtool leads to the same problem (locked).
What can I do?
Thanks in advance.
Icecoldlove said:
Hi there,
a friend of mine just got a used xperia p. He inserted his sim card and it worked.
After that he started the current software update. And here is the point. Right after the update no sim card is recognized any more - always says "please insert sim...".
Service menu says everything except sim is locked with 5 possible tries.
I just made a downgrade using flashtool which seemed to free the phone again according to service menu - but no sim card is detected.
An update using flashtool leads to the same problem (locked).
What can I do?
Thanks in advance.
Click to expand...
Click to collapse
Same problem with xperia U after wrongly installed update for unlocked bootloader while my phone doesn't have it unlocked.(http://forum.xda-developers.com/showthread.php?t=2410391)
When Sim is in: IMEI and baseband not recognized, also, no service.
with sim taken out: Emergency calls available, imei and baseband detected.
tried reflashing, downgrading, nothing helped.
did you find any fix?
please try with different sim and post if it works or not.
Tried with 3 different cards of different providers. No Solution yet - any idea?

D802 HardLocked

Hi mates,
Bought an second-hand D802 without checking the lock status. It worked when I tested it, but after a couple of hours it gave out the "SIM card removed - The mobile network will be unavailable until you restart with a valid SIM card inserted". The phone automatically rebooted after 5 seconds and when it restarted it just said Invalid SIM.
It kept doing this many times a day. I needed to restart it 3-5 times to get it back with a signal.
Took it to a friend that has an Octopus Box, he struggled to Repair the security, even got the IMEI 0 but managed to restore it. Unfortunately with no success because the phone is in the same state. He software unlocked it again but with the same "Invalid SIM - Please insert a valid sim and restart".
I read throughout the forum that an EFS restore from another working factory unlocked D802 might get rid of the Hard Lock status, but no one confirmed a success for any G2 model.
Does anybody have the slightest idea of what can be done ?
Thanks!
Ok so I downgraded to 4.2.2 and now testing to see if the "SIM card removed - The mobile network will be unavailable until you restart with a valid SIM card inserted" error disappeared. It displayed the first time I started the phone but let's hope it won't reappear. If in 2-3 days it will be all ok I will put out a guide for everyone that has this error with the G2.
Having the same issue. My phone is the d801. I had a backup efs but restoring it hasn't helped at all. Flashed stock kitkat rom and it worked for a few hours without the problem but now it's back up again.
MoArTea said:
Ok so I downgraded to 4.2.2 and now testing to see if the "SIM card removed - The mobile network will be unavailable until you restart with a valid SIM card inserted" error disappeared. It displayed the first time I started the phone but let's hope it won't reappear. If in 2-3 days it will be all ok I will put out a guide for everyone that has this error with the G2.
Click to expand...
Click to collapse
Wich is the phone ? state now? I hope you solved the issue.
Sent from my d802 via tapatalk
cbrk07 said:
Having the same issue. My phone is the d801. I had a backup efs but restoring it hasn't helped at all. Flashed stock kitkat rom and it worked for a few hours without the problem but now it's back up again.
Click to expand...
Click to collapse
I too flashed to 4.2.2 and it worked for a few hours but then started acting up again. Luckily after scouring for hours discovered it could be my sim card. Went and replaced it and now back up and running
but for anyone else there is a better how on returning to 4.2.2 than the one here on xda. Google pastebin Restore Stock G2 Firmware and there's a step by step with photos.

[Z7 Mini] No service/emergency calls only after flashing custom 6.0.1. rom

So, I've had a lot of problems with my phone lately, including a semi-brick for a while. After all this mess, I had to do re-partition, fix WiFi and stuff like that.
Recently, my only problem was no service after inserting SIM card in CM12 (basic stock ROM using Nubia Tools, repartition using official 2.03 ROM from NeedRom & finally CM12 for Nubia Z7 Mini from NeedRom). SIM card was fine but there was no service, I've tried re-inserting it, I've tried different SIM cards etc.
The issue went like this: phone crashed and "turned off" after inserting SIM card. It wasn't really off - Windows was detecting it as several storage disks (?), and it was heating up after a while. Long press of a Power Button made it reboot to system and it was running fine, but only without SIM card. SIM card made it freeze, heat up and the issue was happening all over again.
Currently, I've tried to fix that by flashing latest Resurrection Remix. Now, phone is stuck at "emergency calls only" - it tries to find service but without any luck. I've read that it might be an issue with bootloader - that there is some script that is trying to run, making it unable for the SIM card to grab service. The phone is really heating up with SIM card in it, but it definitely detects it and it tries to find service without any luck.
Maybe flashing only modem would do? But I can't find it anywhere.
What can I do to fix it? IMEI numbers are fine, on their right place.

No sim card detected

so yesterday i was on my max 2 just playing a game when suddenly a messeage popped up in the notifictations about "no sim card detected" so i tried to remove the sim and re insert it but nothing,tried to switch roms with a reset and still nothing,anybody help?
P.S:the phone was shipped with only one working sim slot but i dont really use dual sim so i didnt care but now it dosent work and im scared that this is a hardware flaw
idan445 said:
so yesterday i was on my max 2 just playing a game when suddenly a messeage popped up in the notifictations about "no sim card detected" so i tried to remove the sim and re insert it but nothing,tried to switch roms with a reset and still nothing,anybody help?
P.S:the phone was shipped with only one working sim slot but i dont really use dual sim so i didnt care but now it dosent work and im scared that this is a hardware flaw
Click to expand...
Click to collapse
What is your provider? I have the same issue with a Sim card of the German Telekom. After 3 weeks of use it stopped working. I put in my second Sim which works for the moment. So the Sim slot is OK.
the sim works with other phones
Same problem, my sim was broken after 2 weeks.
I get a new one and phone works fine again.
Try to flash this zip via twrp
Same problem here... I have flashed andr68rus patch, but it does not work.
Problems start after flashing SmallEUI. Now I have flashed back the stock 20S and make a full wipe (including system) before. But there are still no SIM cards are found. When the phone is powered on and I open and close the SIM card slot, it found SIM card 1. but not second one.
After a reboot SIM card 1 is gone again. I have to open and close the SIM card slot again.
Any idea? Is this only a strange coincidence and my phone is defect or does smallEUI change something in the firmware or baseband files?
scharrrfi said:
Is this only a strange coincidence and my phone is defect or does smallEUI change something in the firmware or baseband files?
Click to expand...
Click to collapse
Maybe, but I experienced the same thing, also with small EUI, IIRC. Pulled my sim and put it in the wife's phone, and it worked ok, and hers worked ok in mine. Put mine back in my phone, and no dice. Flashed stock20s to try to fix it. At one point, I re-inserted with power on, and it was recognized, but my LTE went away. Was like that for a number of hours, and suddenly, after a couple of reboots, it seemed to come back to life.
Currently on AOKP MM, and I am floored by how nice it is, compared to everything else I have tried. I seem to have an issue with USB file transfers, and the LeEco camera doesn't work, but I've never seen the phone perform like it does now..
scharrrfi said:
Same problem here... I have flashed andr68rus patch, but it does not work.
Problems start after flashing SmallEUI. Now I have flashed back the stock 20S and make a full wipe (including system) before. But there are still no SIM cards are found. When the phone is powered on and I open and close the SIM card slot, it found SIM card 1. but not second one.
After a reboot SIM card 1 is gone again. I have to open and close the SIM card slot again.
Any idea? Is this only a strange coincidence and my phone is defect or does smallEUI change something in the firmware or baseband files?
Click to expand...
Click to collapse
It's happened with me too. Do you find a solution?
It seems that the second SIM card is really broken. I test it in two other phones and they will not detect it too. When I remove the second SIM, the first SIM ist detected normal.
In my case it seems following problem: https://www.golem.de/news/defekte-s...en-die-probleme-fuer-oneplus-1603-119620.html
i runned into the same issue after flashing CM13 from TEAMSPAIN
After flashing CM13 from teamspain, my sim card stopped working. I flashed many other roms but couldn't make work. Then i downloaded the official rom from leeco website and after installing it, everything is back to normal and obviously my sim card slot is working again.
works with oreo ?
andr68rus said:
Try to flash this zip via twrp
Click to expand...
Click to collapse
is this patch works when 2nd slim slot does not work at all or just when sim does not recognized but after inserting another sim works on same slot ?
because my both sim were working fine and suddenly 2nd sim slot showed sim faulty or not inserted error. checked on another phone and it works .
then inserted another sim on 2nd slot and that one works .
so can i try this patch on oreo aicp rom or not?
---------- Post added at 08:39 PM ---------- Previous post was at 08:38 PM ----------
andr68rus said:
Try to flash this zip via twrp
Click to expand...
Click to collapse
is this patch works when 2nd slim slot does not work at all or just when sim does not recognized but after inserting another sim works on same slot ?
because my both sim were working fine and suddenly 2nd sim slot showed sim faulty or not inserted error. checked on another phone and it works .
then inserted another sim on 2nd slot and that one works .
so can i try this patch on oreo aicp rom or not?

Second SIM slot stopped working after update

A really weird problem appeared on my device after upgrading to the latest miui 8.7.19 global beta from the 8.7.12.
After this update my secondary SIM slot stopped working. It reads the SIM correctly but it can't connect to the network.
If I put the same SIM on the slot1 it works, if I put it on the slot2 it doesn't work.
It's driving me crazy because I have the need for 2 SIM for work.
I already tried to revert it back to the old ROM via fastboot formatting the phone but it did not help. The problem is still there.
Can someone please help me? thanks.
searchworlds said:
A really weird problem appeared on my device after upgrading to the latest miui 8.7.19 global beta from the 8.7.12.
After this update my secondary SIM slot stopped working. It reads the SIM correctly but it can't connect to the network.
If I put the same SIM on the slot1 it works, if I put it on the slot2 it doesn't work.
It's driving me crazy because I have the need for 2 SIM for work.
I already tried to revert it back to the old ROM via fastboot formatting the phone but it did not help. The problem is still there.
Can someone please help me? thanks.
Click to expand...
Click to collapse
Nearly same problem.
my phone was imei repaired. today i updated to the miui 10 with ota. than sim card gone. no service

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