My iPhone 3GS doesn't read any sim card

I have an iPhone 3GS 16GB white version. I placed the motherboard into another iPhone 3gs housing and still no sim reading. So i thought maybe it is the connection with the simreader. I replaced it by soldering on a new simreader. But still it keeps searching for a simcard. the metal pin goes down if i insert the simtray so that should be good i guess. Are there any other options that i can try to fix this simcard issue? (it does not work with any other simcard either.

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have you contacted the phone provider/network carrier? If this phone is used (but new to you) I'd also check it isn't lost/stolen/bills paid..BTW, I have updated a phone to ios5 which was jb/unlocked and it now has no sim card recognition..


Hmm that would be pretty bad... I can check if it is stolen with its IMEI number? do you know where or how?


this one is free.., it isn't updated daily, so may not be the most accurate. It will only give you a range of green (good) red (bad) it will not tell you what the problem is. One iphone I checked on there was 9/10 green..the 1/10 was an unpaid bill blocked imei by phone company. If you know the carrier, ring them. It is worth paying for a imei check on all secondhand phones before paying. In the UK we use "checkmend" run by police/insurance/phone co, updated hourly...not sure if it's gone overseas..


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