I've discovered after reading how captivates keep turning off on their own, that it happens when it gets cold; this explains the recent outbreak of complaints because fall has hit, i.e. cold weather is here. I live in soCal yet anything around 60°F and this thing turns off. The problem is my phone is my alarm for school; if it turns off because my room is even like 65°F in the morning, I'm screwed for an alarm! My phone is rooted too so warranty is a no go. Can I possibly unroot my phone and reset it so I can send it back to samsung under warranty?