Service providers that offer contract-free iPhones include Boost Mobile and Straight Talk. Both carriers offer the latest iPhone models without locking users into years of contracts. You can also purchase an unlocked iPhone on Amazon.com, eBay or another online retailer.
Boost Mobile offers the iPhone 6, 6 Plus and 5c as of April 2015. These phones come contract free, but the freedom does come at a price, as new iPhones cost hundreds of dollars when purchased through the company.
Straight Talk also offers a variety of iPhones without contracts, including the iPhone 5, 5S, 5c, 6 and 6 Plus as of April 2015. Users with iPhones must pay for the provider?s unlimited service option, but Straight Talk offers service commitments of as little as 30 days.