"Office" castmates including Craig Robinson and Angela Kinsey star in ads touting AT&T's security system for small businesses.

AT&T Business began teasing the campaign over the summer, with a leaked video showing Robinson announcing that he is quitting ...

Beyond Milana Vayntrub's bubbly personality, the actress credits one of her key talents as to why AT&T has produced so many Lily commercials.

There are hundreds of commercials featuring the sweet Lily Adams (Milana Vayntrub) hawking AT&T's wares. But what you may not know about the AT&T commercial girl is that, despite initially being ...