First of all, you can be sure that a $40 charge for a $100 phone bill is not a charge to your mobile\/Unicom\/Telecom phone card. Although you see the advertising people claim that mobile, Unicom, telecommunications can be used, or propaganda is three networks. If after the consultation, it will be found that they take the propaganda of the ball, in fact, they take the recharge card of the network phone (that is, the phone fee of the network call software, the phone call through the traffic network, the sound quality is relatively poor), and make propaganda in ambiguous language to attract users to understand and consult.