Why can't I get the SMS verification code for my reservation in Hangzhou?

I can't receive the SMS verification code reserved in Hangzhou. Should I receive other SMS messages? If you can receive other text messages, it proves that there is nothing wrong with the mobile phone. It is estimated that there is a problem in upgrading the mobile phone network to 4G, and the biggest reason may be the problem of program interface or signal. The solution is as follows:

1. In the mobile phone network settings, set the mobile phone network to 2G, and then send the mobile phone verification code, as long as it can be received.

2. After getting it, switch to 4G priority and receive the verification code! Give it a try! Similar problems can be tried like this. Please give some encouragement if it is finished! ?