How much do you charge for snail mobile SMS?

Snail mobile 99 is free. The biggest advantage of this card is that it is different from other mobile phone cards: this card does not need to be recharged because it is not charged according to the phone bill. After talking minutes, traffic and short messages are used up, you need to go to Snail Mobile's free store to buy a tariff package. If you don't buy a short message package, the short message is negative, which means you owe money and need to buy a short message package to correct the error.

Arrears: "9" category is free with the balance of telephone charges, and the voice is negative, so you can't make a call. If the traffic is negative, you can't surf the Internet. Negative short messages will affect services such as card replacement. A single function is disabled, and other functions are not affected. If the allowance is negative for more than three consecutive months, the pin number will be shut down. Free cards with rabbit currency balance settlement, such as group cards and 30 free cards, will lead to downtime and cancellation of numbers if the balance is overdrawn for more than three months.