It is a very useful and easy to use service. But they take advantage of this convenience to get more money than they should in two ways. First you can only pay in fixed amounts, minimum $30. So if you only need 30 minutes, which is $6 they keep the rest. Then there is a deposit. Most payment methods require $198 deposit. Even after you return the device, they keep the deposit. You must find in the app where to get a refund, request it then it takes weeks to get your money back. Better not forgot to request a refund!Would have rated this 5 star but the payment scams brings this down to 1.