The mobile phone has changed its number. Someone else transferred it. In the past, some businesses of the owner used this number. How to clear it?

If the mobile phone comes with related services, you can check in the business hall and cancel accordingly.

If it is the contact reminder phone number of other matters left by the original owner, it is not easy to cancel it. If there is a phone bill reminder service, cancel the mobile phone card service, and naturally there will be no more reminders. The rest of these are similar to the contact numbers left by the other party. It's not the phone card itself. We can only wait for the other party to update their contact information. Or ask the corresponding business company whether there is a solution to update the phone number and cancel sending the reminder message to the original number.