If I buy an AT&T iPhone 4s, can I put a Net 10 service plan?

I'm buying an iPhone 4s, and the seller says I can use it with net 10 even if its an at&t iphone.

Is it true?

You would have to have the phone unlocked by ATT to use it with Net 10. And your account has to be in good standing.

You're better off buying an unlocked phone off of eBay or Amazon.

The phone has to be unlocked before you can use it on Net10. It's always better to get an unlocked phone as the buyer can always report it stolen and get a replacement. If you need an unlocked iPhone cheaper than retail, mail me.