If a cell phone or PDA is unlocked can i use my existing wireless plan on it?

Question

I'm looking at buying a refurbished "BlackBerry 7290 Unlocked GSM" online. It says it is unlocked, no activation required. I already have a sprint PCS wireless service plan for cell phone, etc... Will I be able to activate my existing service on the blackberry if I buy it? Thanks!

Answer 1

You have Sprint. That's a CDMA service. A GSM phone won't work on it. Those are different technologies.  Don't buy it.