手机充值卡是电信企业采用的一种方便用户的通讯费支付方式。该卡具有一定面值和密码，购卡后，输入密码即可实现手机交费。党政机关、事业单位领导干部无线通讯费用实行定额包干、超支自付、节约归己的办法后，基层单位又有些人开始在手机充值卡上打起了小算盘。其主要做法是 Mobile phone prepaid card is used by telecommunications companies a user-friendly communication fee payment. The card has a face value and password, purchase card, enter the password to pay the phone. Leading cadres of party and government organs and institutions have implemented fixed-cost wireless communications expenses, overpayments and self-sacrificing measures, grass-roots units and some people began to play on the phone prepaid card abacus. The main approach is