However, using the Samsung Galaxy S III GT-i9300 in the U.S. means you will have to accept some compromises. The model does not have 4G LTE connectivity, unlike many Android phones currently sold by carriers. Thus, the GT-i9300 can only connect to AT&T’s HSPA+ network. On T-Mobile the phone would be able to make calls, but won’t be able to connect to high-speed data as the GT-i9300 lacks support for T-Mobile’s 1700MHz band. Needless to say, the phone won’t work on Verizon and Sprint.