When the telecom is in arrears, I can't receive the payment SMS?

When the telecom is in arrears, the payment SMS may not be received.

If it is a one-way outage, you can receive short messages, especially short messages for urging fees.

If you stop twice, you won't get it. Generally, the arrears will stop for one month (that is, you can call in but not call out), stop for two months (you can't call in and call out), and the arrears will be cancelled after 90 days. The figure will be reissued in six months.