Just when you thought calling a cab was old-school, history is repeating itself. Ride-hailing company Uber is testing a toll-free number in Arizona that users can call for a lift. Ticker Security Last Change Change % UBER UBER TECHNOLOGIES INC. 39.66 -0.43 -1.07% LYFT LYFT INC. 44.69 -2.34 -4.98% It works by customers dialing 1-833-USE-UBER