Designed and marketed by Apple, the iPhone 3G boasts a 3.5, multi-touch TFT capacitive touchscreen with a 320 x 480pi resolution and is protected by a Corning Gorilla Glass and an oleophobic covering. It runs on the iOS, which is upgradable to iOS 4.2.1, and a 412 MHz ARM 11 CPU. This smartphone utilizes a 256 MB of RAM with an internal storage capacity of 8 GB. Its 2.0 MP camera shoots clear pictures and videos even under low light conditions. This device utilizes Wi-Fi, Bluetooth and USB 2.0. Its Li-ion battery is non-removable. This device is unlocked and compatible with Vodafone, EE, O2, Three Carriers.