Reasons for the failure of sending WeChat short messages

Incorrect cell phone number input, unstable network signal, and over-limit collection times.

1, mobile phone number entered incorrectly: If the mobile phone number is entered incorrectly, the SMS verification code will be sent to the wrong number, and naturally the sending will fail.

2. Unstable network signal: If the mobile phone network signal is unstable, the sending of SMS verification code will also fail. At this point, we can try to change places or try again later.

3. Collection times exceed the limit: please send it because it exceeds the number of times.