I am using Dell streak mobile phone in which I was android 2.1 and all the things was working absolutely fine and after that I have upgraded it to android 2.2 and after that whenever I try to call from my mobile at that time my phone just go to sleep and after that I that when I disconnect the call at the time my phone stop responding. Now after that I have to restart the phone every time. Now please tell me what I should do to solve this problem.
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