There is still a lot of available balance in the account. Why is the available amount of SMS reminder insufficient, 50 yuan?

1. Maybe the SMS reminder is not enough. 50 yuan refers to the actual available balance after deducting the real-time telephone charges of this month.

2. Unicom mobile phone users:

(1) Post-paid users: current available balance of account = available balance of account-real-time phone bill.

(2) Prepaid users: current available account balance = available account balance.