The iPhone 6s Plus is constructed with an aluminum back and frame with Gorilla Glass front. The iOS operating system is powered by Apple's A9 processor with 2GB RAM backed by a 2750 mAh battery. 5.5" 16M color IPS LCD touchscreen display. 12 MP rear camera with Dual-LED dual-tone flash, HDR, 4K video and 5 MP front camera. Connect by GPS, WiFi, Bluetooth. Other features include Touch ID, Siri and Apple Pay.