Why is it so slow to receive Alipay verification code text messages?

Dear, if the verification code is not received, it may be a problem with the communication gateway. The verification code is delayed. Dear, you can try the following method: 1. Turn off the phone for 1-2 minutes; 2. At present, some smart phones The firewall also has a blocking function. You can take out the sim card and use an ordinary or family member's mobile phone to receive text messages; 3. If it still doesn't work, please try again in a different time period~