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iPhone4S是第五代iPhone。网络制式为GSM/CDMA ,存储容量有8GB、16GB、32GB、64GB可选,机身颜色有黑色、白色可选。维修iPhone4S是容易的,需要耐心,用到的工具有螺丝刀、撬棒等。

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still no reception - cellular antenna

Hello

First of all, sorry for my english.

2 weeks ago, i had a problem with my microphone, so i replace it. Just after that, my problems begans. I have very bad reception (GSM). I have changed 2 times cellular antenna but the problems is not resolved. i also cleaned contact with isopropilyc alcohol, but nothing changed.

Does anyone knows where is my problems?

Regards.

Jeff

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Check the top screw on the logic board and the contact of the logic board underneath the screw. This is another antenna for cell reception. Usually they don't break at the same time.

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Hello

can you tell me wich screw is concerned exactly with this picture ?

http://www.brico-phone.com/content/produ...

regards

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First off never heard of the top screw giving bad service in a 4s even with this screw out your service would be grand.. I could b wrong tho

The screw he's talking about is the top orange one

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The top screw press the logic board into the housing, ensuring top antenna connection. Usually the primary antenna is connected next to the battery but this secondary one can solve some issues as well. Especially when the bottom one is broken.

完成的

Never knew that good til know :)

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