The iPhone 4 is the fourth model of iPhone, and successor to the iPhone 3GS. Announced on June 7, 2010.iPhone 4 Features and Disadvantages over iPhone 3GS/3G/2G iPhone 4 Price in India : Rs 41500/- by Airtel and Aircel Key features of iPhone 4 Quad-band GSM and quad-band 3G support with 7.2 Mbps HSDPA and 5.76 Mbps HSUPA 3.5″ 16M-color LED-backlit TFT capacitive touchscreen of 640 x 960 px resolution Scratch-resistant...