Can't receive the SMS verification code of Unicom's mobile phone business hall

Common reasons why mobile phones can't receive verification codes:

1, mobile phone arrears

2. Poor contact with the mobile phone card

3, the position difference of the signal

4. Set blacklist and information interception.

If these reasons have been eliminated and you still can't receive the verification code SMS, it is probably a problem of the operator. You can call the corresponding operator and contact the manual customer service for processing.