iPhone 6s Plus isn't just bigger it's better in every way. A 5.5 Retina HD display. An A8 chip with 64-bit desktop-class architecture. A new 8MP iSight camera with Focus Pixels. The Touch ID fingerprint identity sensor. Faster 4G LTE and Wi-Fi.1. Longer battery life.2 And iOS 8 and iCloud. All in a 6.9mm thin seamless design.