I just signed up with AT&T Wireless and purchased a Nokia 3360. I have not had any real trouble with the phone, but a lot of people are telling me they are trouble. Should I switch to another phone? Any good choices? Also, my sister just signed up with AT&T but at another location and got a better phone package that included travel adapters and face plates. If I switched phones do i have to go back to the place i got mine from or could i do it at any at&t representatives? Just trying to figure out what to do before my 30 days run out.Thank you.