3 15 how to seal the mobile phone number?

It may be that this number is often used to promote products or send marketing information, and others can't unlock it, or the operator may have blocked it wrong. Operators will monitor harassing calls and text messages in real time, and can bring their ID cards to the business hall to unseal them.

The mobile phone number is blocked. If it is not illegal, you can go to the mobile company and ask for cancellation.