Apple iPhone 6S 64 GB T-Mobile, Silver Comes with Easy to use iOS with refinements at every level from the apps you see on your Home screen down to the foundation of the system Keep everything you love about iPhone up to date, secure, and accessible from any device with iCloud. With just a single press, 3D Touch lets you do more than ever before. The 12-megapixel iSight camera captures sharp, detailed photos. It takes 4K video, up to four times the resolution of 1080p HD video. iPhone 6s is powered by the custom-designed 64-bit A9 chip.- delivers 70% more CPU performance