A number of tablet manufacturers are now offering 3G capable tablets. However, trying to get the tablet to work in 3G mode can be a frustrating experience to say the least. Here in the USA there are four primary players in the mobile networks arena, AT&T, T-Mobile, Verizon and Sprint. AT&T and T-Mobile operate WCDMA Band Networks, while Sprint and Verizon operate CDMA Band Networks. From what I have seen thus far here in the USA the typical tablet with an internal 3G radio operates using the WCDMA band frequencies. If I use a PiPo 3G tablet as an example only, the printed M8 User Manual specifications are outlined as follows: HSPA/WCDMA: 2100/900MHz GSM/GPRS/EDGE Quad band: 850/900/1800/1900 Download maximum 7.2Mbit/s Upload maximum: 5.76Mbit/s All this simply means that the tablets are supposed to be totally suitable for use on an international basis. However, as they say, "There is a fly in the ointment". First, in the USA the choice of carrier is limited to either AT&T or T-Mobile because only they support the WCDMA (HSPA & EDGE) 850/1900 frequency bands. Second, note that the tablet only supports the Edge (2G) 850/1900MHz frequency bands, but does not support the WCDMA (HSPA) 3G 850/1900 frequency bands. And, in the case of my PiPo M8pro 3G tablet, based on its IMEI number, the AT&T provisioning system identifies it as a 2G device of "Unknown Manufacturer" and "Unknown GSM". For the most part, to be able to utilize other than the very slow EDGE (2G) networks, you will now need to have a tablet that supports the 4G T-Mobile 1700MHz band or AT&T 2100MHz band. It is my opinion, that at this time there is no 3G advertised Chinese tablets that will work satisfactorily in the USA.