TheChaka wrote:
I'm buying the phone off craigslist, and I want to know if I'll be able to use it as an iPod without having to pay for a service agreement. I just want to listen to music.
Yes, you certainly can. You will still want to plug it into iTunes and activate it with Apple (has notthing to do with cellular service) so you can download music and apps to it. An iPhone not associated with a cellular service contract is effectively nothing more than an iPod Touch anyway.
If the seller does not do so, you'd be best to also do a full restore on it to set it up as new for yourself and your content and use.
Since this is a CDMA iPhone, in order to be sure the cellular radio is not wasting power, just enable airplane mode, then re-enable just wifi. That will leave the cellular radio OFF and power on just the wifi radio.
I used my old iPhone 3Gs as an iPod Touch for a good couple of years, no problems with that intended use.
(p.s. if this was a GSM iPhone, then yes, you would need a SIM, any SIM, in it in order to activate it in iTunes. For a CDMA phone, you simply skip that part of the process - just plug it in and activate in iTunes).