What should I do if my mobile phone can't receive the message sent by 186?

I can't receive SMS messages from systems such as 186 and 18611. Reasons:

1. 36 is installed on my mobile phone or anti-virus software such as Mobile Guard is blocked. It is suggested to recover from spam messages and set port numbers such as 186 and 18611 as a white list.

2. The memory of the mobile phone is full: please delete some memory.

3. Mobile phone terminal problem: test the replaceable mobile phone. If it is a mobile phone problem, it is recommended to deal with it after sale.

it is suggested that you can also go to the nearest mobile business hall for assistance from staff.