Why does China Mobile send text messages when it has no phone bill? Why don't you care about reminders when you have expenses?

Sending SMS notification when there is no phone bill is also a way to protect the rights and interests of users. If the user does not give notice when the balance is insufficient, the mobile phone will be turned off without knowing it. Users don't know what's going on yet, so it's very troublesome to find a place to charge the phone bill temporarily. What if something urgent is wrong? SMS is a good way to let me know how much phone bill I still have, how long I can call and when I have time to recharge. SMS reminder will remind us when our balance is insufficient and the recharge is successful. The amount of arrears is judged according to different brands, network age (how long this card has been used) and credit (credit: whether there is malicious arrears during use and whether the arrears are paid in time).

There are several reasons why SMS notification is not in place: does the SMS capacity on the mobile phone prevent new SMS from entering?

The mobile system is busy and the transmission is delayed.

Sometimes when the system judges the arrears and insufficient balance in the middle of the night, in order to avoid disturbing the user's rest, no notice will be given.