Best Buy sells a variety of AT&T cell phones, including the iPhone 6. Other AT&T cell phone brands that Best Buy carries are Samsung Galaxy S6 and Samsung Galaxy S5, as of 2015.
Amazon.com also carries a large variety of AT&T cell phones. Many cell phones are free if the customer signs up for a 2-year contract with AT&T for cellular service. The Motorola Moto X - 2nd Generation, Black Leather 16 GB is only $1 if the customer agrees to commit to a plan with AT&T, as of 2015.
Amazon.com also offers a wide variety of cell phones by AT&T that the customer does not have to commit to a service contract. These phones sell outright at their value, and customers can purchase minutes to be added to their phones.
There are advantages and disadvantages of a cell phone contract. Advantages are that the consumers monthly rate will not increase throughout the course of the contract period as long as the customer stays on the same plan. There may also be bonuses attached to the contract, such as caller ID, voice mail and free minutes.
Some disadvantages to contract cell phone service is that the there may be a set up charge, or if the customer wants a new phone before they are eligible for an upgrade under the terms of the contract, he has to pay the full price outright.