Hi all, got a problem with my 6600 and wondering if any one could help. I got the phone for x-mas, shortly after it decided to turn itself off and never turn on again, it would light up but then turn off again. It went back to the shop i had it from, they sent it away and gave it a software upgrade and it worked. Well it worked untill 30 mins ago when it did exactly the same, turned itself off and now when you turn it on, it lights up for a bit and then turns itself off. Battery is full, does the same when charger is plugged in and still does the same when no sim card fitted. Has anyone any ideas or is it back to the shop again???