The Samsung D900 currently takes the honours for the world’s thinnest slider phone, at just 12.9mm thin. Despite its slimness, it’s not exactly feature-light, though. Top of the list comes the 3 megapixel camera with autofocus, closely followed by a great QVGA screen, MP3 player, TV Out, support for microSD cards, and GPRS, EDGE class 10 and Bluetooth connectivity.