How can I send a reminder message when I change my mobile phone card that is not my name?

Contact a friend in the address book to get it.

In fact, even if you change your mobile phone number, you can still find your new contact information through collection. Details can be obtained by contacting friends in your address book. When making a loan, some loan apps will ask to identify your address book. If the platform can't contact you after loans overdue, it will contact your family and friends in your newsletter, and then work out your new contact information. Find your new number through the operator. The current mobile phone numbers are all real-name authentication, and the collection may be queried with your ID number. Obtained through a third-party data company. Now that we have entered the era of big data, some loan platforms have realized data sharing, and personal information is easy to leak. It is very simple to find your new number. Therefore, even if you change your mobile phone number, you can't completely avoid collection. Since you owe money, you still have to pay it back on time, otherwise your credit will be affected.