Fonus is an American telecommunications company based in Santa Monica, California, operating as a mobile virtual network operator on AT&T’s network. Founded in 2019 by Canadian businessman Simon Tian, the company offers a single monthly prepaid plan as opposed to the usual multi-plan offerings of other carriers, providing users with unlimited data, unlimited calls and texts worldwide, and free roaming in the United States, Canada and Mexico at a fixed monthly fee. The data operates on AT&T's cellular network in the United State... read full review »