Motorola A3100, nicknamed MOTOSURF, runs on the Windows Mobile 6.1 Pro and supports quad-band GSM/GPRS/EDGE and tri-band UMTS (with HSDPA). It sports a 2.8 QVGA display and a 3 megapixel autofocus camera.The A3100 MOTOSURF utilizes the all too familiar MSM7201A Qualcomm chipset and has 128 MB of RAM. There is also a microSD card slot for expanding the built-in flash memory of 512MB with up to 16 GB. The other highlights of Motorola A3100 include Wi-Fi, GPS, USB v2.0 and Bluetooth.