If I buy an iphone off of ebay how do I get it to work for my carrier?

I want to buy an iphone off of ebay, but i'm not sure how to get it to work on my carrier which is cricket.

Make sure that you check the iPhone's description to see if it's unlocked or not, if it is unlocked it should work with your carrier

DO NOT BUY AN IPHONE FROM EBAY! There are many scammers out there who try to send you a fake one. This happened to my best friend. It cost her 200 dollars that she never got back. Go to this website here > http://www.wirefly.com/ You can buy phones from this website. They are cheap, this website isn't a fake and i got my phone from here and its actually a good one too. So go too that website and get yourself a phone. (I sound like a salesman… Lol) i hope this helps you out.

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