Hi, Just bought an A2107A over other similar priced (and more expensive) tablets as the Lenovo has built in GPS and two SIM slots for 2G and 3G. GPS took a while for first fix out the box but now fine. SIM works on 3G and frees you from WiFi coverage or one of those little WiFi boxes. I can now run Google Maps with location by gps and maps from 3G. Now all I need to be able do is send an SMS to a standard mobile. I don't want messaging over the data network to another tablet but simple SMS send and receive to 2G phone. **** Edit - answered my own question. **** My 3G sim in the tablet was data only. I made use of the second sim slot in the A2107 and put in the Virgin PAYG sim from my mobile. Next time I ran the Messaging app it asked me which sim to use for messages. I chose the Virgin (shown as T-Mobile network) and it then sent the SMS message okay. So now I see a good reason for the A2107 having two sim slots. You can have a data only sim plus a phone sim. Its a great tablet by the way with all this connectivity as well.