Instruct: Classify the given Amazon review as either positive or negative.
Query: Question

I have a question about the treo. If I currently have an AT&T Wireless plan, and I buy this phone from a friend or someone other than AT&T, will I be able to get a plan for it with AT&T? Does the treo I buy have to be locked or unlocked to use with my current provider? (AT&T Wireless) I know nothing about these kind of things so any info would be cool. thanks!