The Apple iPhone 5s was announced on September 10, 2013. Repair of this device is similar to the previous models, and requires screwdrivers and prying tools. Available as GSM or CDMA / 16, 32, or 64 GB / Silver, Gold, and Space Gray.

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TouchScreen not working randomly

Hi All,

I have a customer with an situation that i never see happen.

My customer have is TouchScreen that randomly works and major times dont work.

It dont seems to have damages on connector but i will have to check better on microscope.

I changed the battery for a new one and same problem

Changed the LCD for another and same problem

Changed the MotherBoard to another case and same problem

So the problem is the motherboard. I thinking on Touch IC but have ever happen to some one the touch work randomly?????

Answered! View the answer I have this problem too

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Yes it´s the touch ic. The problem is caused by the solder balls. If the iPhone get´s warm the error disappears. Lay it in a fridge an the problem get´s worser. Before replacing the touch ic check the touch screen connector on any damage. If there is none you can first try to reflow the ic. If that does´t fix the bad touch replace the ic.

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Hi Marius,

Yes, at this precise moment he is working but if i disconect the conectors and put ir back again it will not work.

If i disconect the battery a few times he start work again.

Maybe i will try to reflow it first..

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Paulo Silva will be eternally grateful.
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