My Apple mobile phone uses Unicom card, which is a contract machine. Why are there so many spam messages and harassing calls with different numbers? Really?

Unicom's mobile phone number intercepts spam messages as follows:

1. The number starts with 106: the number can be blocked by local manual customer service after being recorded;

2. The number is the mobile phone number: you can send "LJDXB # number # content" to 100 10, free of SMS information fee. Android mobile phone users can log in to the Android version of the mobile phone business hall client, click customer service > spam report, and enter the spam report page to report spam messages.

3. There is no number, but there is a link URL: you can turn off the service/push information through your mobile phone.