The refurbed CAT S52 is a sturdy yet powerful smartphone for rugged use. Not quite as bulky as some other CAT devices, the S52 offers something close to understatement. The large screen lets you always keep everything in view and - thanks to the powerful processor - maybe even get a game or two going. It has a non-slip and hard-wearing rubberised back: that might not sound so special, until you realise that this makes the S52 narrower than many "normal" glass back smartphones, which need an extra to stop them from slipping away.