Why didn't you receive the verification code when you participated in the activity of sending 500MB traffic to China Unicom official blog?

The reasons for paying attention to the failure to receive the verification code in China Unicom's official blog sending 500MB traffic are as follows:

1. If you get too many verification codes, there will be a delay. Please be patient.

2. The mobile phone network is not normal;

3. Mobile phone software automatically intercepts, please check the software interception record;

4. Use this number to order services, such as "in the letter" screening.

Tips: You can't get the verification code more than 3 times per hour, or more than 10 times per day, and you won't send it after that day (the times of getting the verification code include all short messages and verification codes of Unicom).