Google (GOOG -0.34%) has been making several moves over the past few years that all point to one thing: a strong interest in becoming a mobile carrier, in direct competition with companies like AT&T (T -1.89%) and Verizon (VZ -0.85%). In this video, Motley Fool analyst Lyons George tells us what some of those clues look like, and why Google might have a big advantage here.