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many thanks again for you concern,i made the upgrade throgh kies the firm ware now is jpkg5 and still the same problem . also i made download to some applications that test sensors in the device and they working fine with the other sensors only gyro sensor doesn,t take any response so ithink that it is hard ware problem so i will back it to the supplier and he will check this problem with manifuctue and feed me back many thanks for you support
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You don't need to download an app to do the tests, there is a way of doing a self test with a code on the phone it lets you test anything on the handset pretty much.
i made the phone to vibrate at its full frequency by placeing my finger on the proximity sensor for 20 sec and found that due to vibrations the sensors again started to work