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Second generation of iPhone. Model A1241 / 8 or 16 GB capacity / black or white plastic back. Repair is more straightforward than the first iPhone. requires screwdrivers, prying, and suction tools.

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Sim Reader faulty, short circut?

I am having problems with a sim card reading in this phone, the copper feet seem fine and there is no liquid damage, however the sim reader is only intermittently reading the sim. I am wondering if it could be due to the part circled in the picture, and if so what does it do? Thanks!

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The red circle shows the SIM Tray detector. The SIM Tray when inserted all the way pushes that copper bar down, breaking the connection on the left side of the SIM bay area in your Red Circle. When this connection is broken by the SIM Tray the iPhone knows to try reading the SIM Card. If the connection is complete (is not broken), like in the photo the iPhone will put up warning "No SIM card installed" and the top left corner screen bar will display "No SIM". If an empty SIM Tray is inserted completely and pushes the bar, breaking the connection, the reading begins, again there will be the warning "No SIM card installed" and the top left corner screen bar will display "No SIM".

When there is problems reading the SIM card, you can clean the SIM card metal contact on the card itself with isopropyll alcohol. If this does not help, visit Carrier and get new SIM card. Also reception problems can be due to antenna issues, make sure antenna ribbon is screwed to bezel at dock port correctly. Also make sure Logic Board copper pin at Do Not Remove Sticker is making good contact to bezel. You say the six copper Junctor Pins are fine, you can also clean these very carefully with isopropyll alcohol.

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great answer Brad!

por

Thanks! I have been searching everywhere for an answer and you have finally given me it! You my friend are a LEGEND!

por

What a great answer Brad. Martin, so the SIM Tray detector that shows in the picture Martin added - Is this was the problem? Martin did you found what was the problem?

por

Nope :( It is one of those things that happen for no reason at all. But i am glad i now know what it is used for! :D Happy days

por

Hahah ... nice :)

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I have fixed this issue by resoldering all the contacts on the sim card reader on two phones in the last month.

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martin será eternamente grato(a).
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