I recently bought an iPhone 4S on ebay?

It's in perfect condition and everything (also it hasn't been used by any phone carriers yet!) but I'm wondering if I can just use this phone on the Virgin Mobile carrier without any problems. I read somewhere that you have to buy the iPhone from Virgin Mobile or else it won't work, but then I read somewhere else that you can put any iPhone you bought on Virgin Mobile.

I'd recommend going into you service provider and seeing what they say.

Only virgin mobile iphones wotk on VM.

You can only use VM phones with Virgin Mobile.