I’m using Sony Ericsson k790i and it s been a month I’m having this problem that my suddenly my mobile screen goes black and remains black for around 10 to 20 minutes and sometimes 40 to 50 minutes. I don’t understand what happened to with my mobile because this is the first time I’m having this problem. Well this is not it, I have another problem that whenever I turn on my Bluetooth that time my mobile phone shows that Bluetooth is on but I can’t receive any file via Bluetooth in fact my mobile allows me to send files to others. Why is this happening? Also my mobile freezes sometimes at least for 5 to 6 minutes. If anyone has had this problem and want to help me then I would really appreciate your help.
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