Apple iPhone 6s is based on iOS 9 and packs 16GB of inbuilt storage. The Apple iPhone 6s is a single SIM (GSM) mobile that accepts a Nano-SIM card. The Apple iPhone 6s measures 138.30 x 67.10 x 7.10mm (height x width x thickness) and weighs 143.00 grams. It was launched in Gold, Rose Gold, Silver, and Space Grey colours. It bears a metal body. Connectivity options on the Apple iPhone 6s include Wi-Fi 802.11 a/b/g/n/ac, GPS, Bluetooth v4.20, NFC, Lightning, 3G, and 4G (with support for Band 40 used by some LTE networks in India). Sensors on the phone include accelerometer, ambient light sensor, barometer, compass/ magnetometer, gyroscope, proximity sensor, and fingerprint sensor.