Can't receive SMS verification code for driving test

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.

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. I suggest you try again later.