I cannot afford Sprint service. Plain and simple. VM offers what I need (unlimited data and messaging) at only $35 a month. While with Sprint Id be paying close to $100 a month (no matter if no contract or contract. I currently have a Sprint number though due to being on a Fam Plan). You can see why I chose VM. Heres where I am so unbelievably confused: I am buying a used deactivated Sprint iPhone 4S off eBay (buying from there because I cannot afford to buy it full price from VM). But I am wondering, can I take it to VM without having to unlock it? I have searched and searched and cant find a good or informative answer anywhere. Im pretty much desperate. SECOND QUESTION/ POSSIBLE ALTERNATIVE: Could I buy a cheap VM phone and switch out the SIMs between the iPhone and cheap phone? A friend suggested this. (Never done it, but theyd heard of it). Thanks to anyone who can help me!