If i got used iPhone, can I go to a phone store and get a plan for it? How does that work?

If i got used iPhone, can I go to a phone store and get a plan for it? How does that work?

To be safe, make sure the iPhone you get is an unlocked iPhone. That means it will work for every carrier. You may have noticed that some phones have carrier logo's on them, such as sprint, t-mobile, and verizon. Those phones are normally locked, and will not work with other carriers besides the brand branded on the phone. So when you buy an iPhone online, make sure to get it unlocked, so it works with every carrier, or buy the phone that is for your carrier. After that, you can go get a plan for the phone.