Just bought A2107 as it has two sim slots (2G and 3G) and a GPS and WiFi of course. Had trouble with gps picking up signal at first - not as sensitive as my Motorola Defy it seems but now working okay and drives Google Maps okay. Also the 3G very handy when out of WiFi coverage.
Just want to get an SMS app loaded now as it does not seem to come with the default Android messenger loaded and as it has two sim slots I can have a data and a phone sim if I wanted.
Oh yes the reset button is just below the rear camera under the cover... yes it's hung once in first 4 days use.