Everyone seems to be getting in on this mobile GPS navigation lark now. Orange has just announced Orange Sat Nav, which is a mobile application that works on a range of handsets, and comes with a GPS receiver to sit in your car. You download maps to your phone using your 3G or GPRS connection, although you can also transfer them on via Wi-Fi. It costs ?150 excluding VAT (it?s aimed at business users), but you?ll have to pay more if you want real-time traffic information or maps of Europe thrown in.