A smartphone that is a combination of an iPod, PC, digital camera and a mobile phone and is created by Apple is named as iPhone. iPhone has many interesting features to its credit. This device can automatically detect WiFi networks. iPhones also support 802.11b and 802.11g standards which are not supported by many similar devices. iPhones use GSM and SIM cards for cellular networks access. For high-speed data transfers iPhones use EDGE. iPhones also support Bluetooth connectivity that can be used for short range networking with other PCs and iPhones. iPhone have a lithium-ion battery that support eight hours of talk and video and almost twenty hours of music.