Why is the speed of receiving SMS verification code so slow?

I haven't received the SMS verification code for a long time, which may be caused by the following reasons:

First, the number of acquisitions exceeded the limit.

Solution: You can only get the verification code 20 times a day. If you have exceeded this number today, please try again tomorrow.

Second, the mobile phone business does not support it.

Solution: At present, all segments of the three major domestic mobile operators have been supported. but

Tibet, Xinjiang, Hong Kong, Macao and Taiwan and overseas mobile phone numbers

Will be limited by the business of mobile phone service operators, unable to handle mobile phone business, you can try to change other mobile phone numbers.

Reason 3: Mobile phone security software interception (for smartphone users who have installed security software)

Solution: Open the mobile phone security software, temporarily turn off the interception function, and then try to get the verification code again.

Reason 4: SMS gateway is congested or abnormal.

Solution: When the SMS gateway is congested or abnormal, the sent SMS will be delayed or lost, and you can try to get it again after a while.

Reason 5: Mobile phones are used abroad or overseas mobile phones are used.

Solution: Due to the influence of mobile phone service provider's business, the mobile phone can't receive the verification code when it is used abroad or used abroad, so you can try to replace it.

Reason 6: People around you can use it normally, but they can't get it.

Solution: It may be the phone itself. You can change your mobile phone card to someone else's mobile phone and try again.