For new customers switching to T-Mobile, T-Mobile is offering to pay off anything you owe on your existing smartphone for free when you preorder the new Apple iPhone 8 T-Mobile Smartphone or Apple iPhone 8 Plus T-Mobile Smartphone. These phones have a glass front and back, with an overall steel-reinforced design. They have a 4.7" and 5.5" Retina HD display, respectively, as well as a new A11 Bionic 6-core CPU. Also included is a 12-megapixel rear camera with optical image stabilization on both models (dual camera on the Plus model), Bluetooth 5.0, wireless charging, and water and dust resistance. It'll come in 64GB and 256GB options. Some exclusions may apply.