Sony Ericsson is one of the few handset manufacturers to support Symbian’s UIQ platform, which has featured in several generations of ‘P’ series smartphones. A new addition to this series, the P990, is set to appear shortly. Also sporting UIQ, and available now, the M600i is yet another take on the keyboarded smartphone. Whereas ‘P’ series devices are aimed squarely at the mobile professional, the M600i is more of a ‘crossover’ device, appropriate to a wider range of users. This doesn’t mean that mobile professionals should pass it over, though, as it has many useful 'business' features, including support for corporate 'push' email and 3G data communications.