Why does Telecom always have SMS to remind the balance?

When the balance of telecom mobile phone card is insufficient, the 1000 1 SMS of telecom will send a short message to remind you of the balance, or it may be that the daily short message is activated to remind you of the balance. If you don't need to call 10000 or cancel this service in the local telecom business hall, you can. For more service benefits, click on "official website" customer service 222 below to answer your questions.