The iPhone 4 is equipped with GPS, Wi-Fi and a digital compass. It features two cameras and a sensor that detects angular acceleration around three axes.
The iPhone 4 is 115.2 millimeters high, 58.6 millimeters wide and 9.3 millimeters deep. It weighs 137 grams. Its battery life is up to seven hours on 3G and up to 14 hours on 2G. Its Internet use time is up to six hours on 3G and up to 10 hours on Wi-Fi.
The device comes with an extra front-facing VGA camera, as well as a rear-facing camera. People can use iPhone 4 to record videos with audio. The device’s front camera allows users to take videos at up to 30 frames per second. Users can tap to focus video or still images.
The device features Retina Display, Apple’s high resolution display. The iPhone 4’s display has a contrast ratio of 800:1. The phone’s screen resolution is 960-by-640. The iPhone 4 also has multifunctional capabilities and comes with Apple’s FaceTime video chat service.
The phone’s front and back have fingerprint-resistant coating. The iPhone 4 allows users to configure their own maximum volume limit. Its audio playback has a frequency response of 20 Hz to 20,000 Hz.
The iPhone 4 is has a second microphone that is used for noise cancellation. It supports many languages including Greek, Polish and Russian. It also has keyboard and dictionary support for many languages.