
The iPhone 4 sports a “retina display” feature which enables on its 3.5-inch display, a native resolution of 960X640 pixels. So as it is held close to eye, that is at 10-12 inches, its resolution will be much higher than a human eye can perceive.
The A4 Chip on iPhone 4 shall deliver 7 hours talk time on 3G networks and up to 6 hours of Web browsing or 10 hours of Wi-Fi browsing. iPhone 4 can The device can play up to 10 hours of video, 40 hours of music, and should have an standby time of up to 300 hours. The iPhone 4 also sports a gyroscope, which enables six-axis motion sensing.

The iPhone 4 has 32 GB of flash storage. It offers quad-band HSDPA/HSUPA and support 802.11n Wi-Fi, A-GPS, Bluetooth, and touchscreen features such as accelerometer sensor, digital compass, proximity sensor, and an ambient light sensor,. The iPhone 4 has an in-built 5 MP on rear with illuminated sensor to click pictures in low-light situations. It can record HD video at 720p resolution and 30 frames per second. There is a new iMovie application for video editing on iPhone 4 which enable users to share video on the Internet.
The front camera of iPhone 4 will enables video calling via FaceTime video calling. The features will work on Wi-Fi initially. The rear-stationed 5 MP camera will allow face-to-face chat undisturbed.
The iPhone 4 pre-orders opened on June 15. iPhone 4 will launch in India in September. iPhone 4 16GB version price and iPhone 4 32GB price will be Rs.35,000 and Rs. 41,500 respectively in India.