I am using Nokia 6700 from previous year and it was functioning very well from then but at the moment it started showing me problems by means of the phone. Initial problem was that it starts extremely delayed and it takes about 10 minutes to turn on the phone. After a few minutes the screen turns out to be black and it freezes. The backlight flashes for a second as well as vibrates when I hold the power key. My phone is under warranty so what should I accomplish to conquer these matter.
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