Buy Phone Only
The vast majority of phone owners still buy phones from a carrier, but there's a lot more freedom and interest in no-contract and unlocked phones. This is good news for all of us because we now have more options than what you can get only in your carrier store. Some of which are quite affordable.
buy phone only
An unlocked phone is one that isn't tied, or "locked" to a single carrier. That means you can pop in a SIM card for AT&T, for instance, swap it out for a T-Mobile SIM, and it'll still work. There's no artificial barrier that keeps you from using the phone on any other network simply because the carrier wants to forcibly keep you (and your phone) as a customer.