Apple iPhone SE runs on iOS 9 operating system that comes with several features such as airdrop,icloud, airplay, AirPrint, spotlight search and home kit.This system gives you full freedom of seamless multi-tasking and smooth internet browsing as the processing speed is quite brilliant, which is 1.8GHz.Various sensors are available in this phone like three-axis gyro, proximity, ambient light and touch ID fingerprint sensor.