Mobile phone market leaders

The Apple iPhone has shaken up the market. Two years after launch and the sector is awash with 'iPhone killers' - mobiles competing feature for feature with Apple's groundbreaking product. Think touchscreens, motion sensors, gorgeous graphics and huge amounts of memory. However, one thing these rivals don't need to worry about is the iPhone's appalling camera.

But not everyone wants to take out a contract with O2 - the only way non-geeks can reasonably use an iPhone. Here we review Apple's latest iPhone, the 3G, and the other phones that are the best at their chosen speciality. ·