After giving my Nokia 6620 to my friend, I thought it gave me an excuse to "upgrade" to a new celly. Biggest mistake of my life. I went for all the bells and whistles, phone, camera, walkman, radio function, awesome! Almost two months old, pristine condition (never been dropped, gotten wet, never left my hand), my new Sony Ericcson W300i starts shutting itself off. **I might add that once I left the store, I charged the phone overnight and when I turned it on the next day...there were text messagesd from phone numbers that are not from my phonebook! Is this a factory set thing?? Cuz I think I...