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I have Sony Xperia Mini pro, i recently updated it to ICS. But now when the phone is overheated (especially during recharging). The touch screen becomes unresponsive, even if i restart my phone, it stills that way.

It goes back to normal by itself after some period of time.

What should I do to fix the problem?

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Here's some more info. In short: the touch sensors are too sensitive and trigger by themselves when the phone is hot. I found that updating to newer Sony firmware does a recalibration, best have your phone a little overheated when you upgrade and the recalibration is OK afterwards. – ce4 Nov 22 '12 at 23:22

Your touch screen needs to replace now. Please contact nearest Sony Service Centre.

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CPU can also be an issue... – Evil Angel Mar 17 '13 at 4:07
@SachinShekhar That is a known issue with some Xperia Mini's - and is acknowledged. The answer given by chancal1987 is the correct answer. – t0mm13b Apr 16 '13 at 13:46

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