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[Q] HELP! My phone can't recognize my sim card

Guys I need your help! My phone doesn't recognize my sim card.. It was happen few hours ago. I was able to use my opera mini to access internet then it was unavailable for a bit then I just wait until it is ok.. I switch off my phone and then it was happen that my phone doesn't recognized my sim card. I try to insert other sim card but its same case...
I badly need your help guys. I don't know what to do..
Please?

If you don't have any custom roms or roots, and you still have warranty, go to service center..

check your IMEI number. similar thing happened with me , after lots of resets ii found out that my imei number i empty. still cant find any solution.

Need help please? Any solution for this case? The warranty of this over..

[Q] [HELP] How to fix IMEI ?

Hi guys, this is really frustrating.
I had ICS on my phone, and wanted to go back to GB. So I followed a guide that saidvery easy steps:
Flash complete bootV21E
Flash x-loader, u-boot
Fix imei
Everthing worked fine, except the imei thing. I cannot make Tutty nor Hyperterminal to connect to the phone when is put to "CP USB" or "CP Image Download" port modes.
What can I do? Is there something I'm doing wrong? =(
Please help!
EDIT: Ok, found a solution. Nevermind guys. Mods; you can lock this thread.

solution
whats solution?

Lenovo A369i No Service Problem

Heya!
I'm using Lenovo A369i. I've flashed the phone a few times before but gotten myself into quite a trouble. I've accidentally plugged out the USB cable when I was flashing the phone the first time and I totally forgot to backup the IMEI number. So, it got a little bit messed up. It didn't turn on the first time. After few flashes in attempt to recover the damn phone, I finally got it on but it can't read my SIM card. It says "Invalid IMEI". I did try to fix it by replacing the MPB_001 thingy and by using the MTK Droid Tools (I didn't remember which one worked) but only managed to recover one IMEI number. Used the phone when it was recovered for about a week and did a format on the phone. After the format, I get the "Invalid IMEI" message again. Flashed the phone once again using the same stock ROM (v111) and afterwards I got a "No service" message instead of the "Invalid IMEI".
Any clue on fixing this one ? I need this ASAP. Tried to search around for answers but only managed to know that I need to change the radio IC but I dunno how to do that.
P.S: My phone stil; works just that it can't read my sim cards (dual-sim)
Currently on my ASUS Zenfone C

Hard Reset stuck

Hello,
Model Huawei G6-U10.When try hard reset it stucks on wiping/format data.Freezing.The reason to do reset is : unable to call,wifi.When try to call get message : mobile network is unable.The IMEI is unknown.What to do?Help please.

Exactly my problem, don't know what to do. Didn't you find solution please? If yes i'd be very thankful if you'd share it with me

Hello,
same problem with me also. Did anybody got a solution?

QPST and DSF

I could use some help with DSF . I'm trying to get a phone that has invalid settings to work again. For some reason writing to the phone DSF just skips over the process and doesn't give any explanation why. I tried the current version and past versions. The phone is in diag mode using the phone num pad method. If anyone could help me get this working I would greatly appreciate it.
Edit: decided to stick with DSF as QPST makes everything harder.