Why does the SMS show that the telecom has no number?

Hello, this problem must first rule out that the mobile phone inbox is full. If the SMS inbox is not full, and you can't receive a message with a telecom number, the general problem is the telecom number. It's not that you can't receive short messages from telecom, but that the telecom number is blocked by the mobile company. It may be that this telecom number is often blocked from advertising, mass sending and publicity, so the number sent to the mobile phone is blocked from publishing. It is suggested to contact the telecom customer service "65438+" by electric signal.