My iPhone restart 4-6 times everyday. I think that it's very big problem and even it very long to turn on. What should i do? I just upgraded my baseband and restored and even unlocked. But the problem is still there. Help please. My iPhone is XXX13 series. So it means its from 13th week of this year. And how to return or change the iphone. any ideas?

Here is the Apple Discussion? Anyone has same problem?
http://discussions.apple.com/message...sageID=6235791

It will took me more than 14 days to get the iPhone to Apple