Joke Collection Website - Public benefit messages - Why can't Unicom receive the verification code of Shenzhen Library?

Why can't Unicom receive the verification code of Shenzhen Library?

The reasons why Unicom failed to receive the verification code of Shenzhen Library are as follows:

1, signal problem, weak signal makes it impossible to receive SMS.

2, software conflict, some software firewall or protection function will also block out some sent information accordingly.

3. The mobile phone number is in arrears, or the loss is reported.

4. Because there are many users, the speed of sending SMS is slow. You can try again later.

5. You can change the machine or card to see if it is a hardware factor.