Apple iPhone 3G was launched in June 2008. The phone has 128 MB RAM and 8 GB/ 16 GB storage of internal storage which is not expandable.
The iPhone 3G has a 3.5 inches, 320 x 480 pixels TFT LCD display with a pixel density of 165 ppi. Coming to cameras, it has a 2 MP rear camera. It has a lightning port for data syncing and charging. There is a accelerometer sensor present on the iPhone 3G. It is a single SIM smartphone with support for 3G, Wi-Fi, Bluetooth and GPS too.
The iPhone 3G runs on iPhone OS, upgradable to iOS 4. It measures 115.5 x 62.1 x 12.3 mm (height x width x thickness) with a total weight of 133 grams including battery.