AT&T and Samsung are part of the Olympics, let's see what roles they play. It can be confusing as to what the two companies relationships are to Olympics and where they stand and what athletes are associated with what products.
AT&T is the official sponsor of team USA at the London Olympics. One of the most prominent Team USA members Ryan Lochte who appears in a new AT&T TV commercial showing him swimming to London.
Just so you don't get confused, this Samsung Galaxy S III/Note and Samsung are official sponsors of the London Olympic Games. AT&T is the official sponsor of team USA. Lochte most likely received a device from AT&T as part of its sponsorship and also received a Samsung Galaxy S III for participating in the London games. You could say he's swimming in the Samsung Galaxy.