The short message function is normal, and all short messages with verification code applied by third parties cannot be received.

1. According to the information you provided, if you can't receive the verification code, there may be the following reasons:

1 Your number is currently in an abnormal opening state, such as loss reporting due to downtime. I suggest you open this number and try again.

2 Your mobile phone has put the short message into the trash can, or the mobile phone security software has intercepted the short message, you can look in the short message trash can first or the software has intercepted it;

Hardware factors cause your mobile phone to receive short messages abnormally, so I suggest you change your mobile phone for detection;

The number 4 is set to block receiving value-added service short messages, and cannot receive value-added service short messages and verification codes.

2. If the above reasons still can't solve the problem, I suggest you contact Unicom's manual customer service to help verify the handling. The actual situation is subject to local policies.