The frame is equipped with a 3G/4G SIM card already installed and set up.
In the USA: Cincinnati Bell, Commnet, AT&T, Viaero, Commnet, Limitless, Alaska Wireless, Indigo Wireless, Tampnet, Sprint, US Cellular, Union Telecom, Verizon, T-Mobile USA.
In UK: O2, Hutchison 3G, Vodafone
In Canada: Bell Mobility, Rogers Communications, Rogers Communications Canada Inc, Sasktel, Telus, Videotron
The frame always connects to the antenna with the best signal.
The frame works in 2G, 3G as well as in 4G.