The HP iPAQ 510 Voice Messenger smartphone is available as from today from a number of selected stores and the main key features include Microsoft® Windows Mobile® 6 Smartphone Standard and Quad band GSM/GPRS / EDGE (GSM 850, E-GSM900, DCS1800, PCS1900 MHz) plus Bluetooth v1.2, 1.3 MP camera and even a Micro SD slot. Right…