The new number always receives information from the previous owner.

When the new card is found to have information belonging to the old card owner, especially information related to money, you can take the initiative to make a customer service complaint, and the background can block the information of the old card owner.

Generally, the mobile phone number will have a three-month freeze period after the user cancels the account independently, and will be put back on the market after the freeze period; If the user is in arrears, it has been in arrears for three months. After three months, the number will be turned on again, and the number will be blocked in the system. Then the number will be frozen for another three months and then put on the market again, which will take six months.

When we need to change our mobile phone number, for the sake of our account security, we must change our APP and website login number to a new card number. When we forget the password, we can at least verify or complain by SMS, and some unused websites can apply for cancellation of accounts. The most important thing is to remember to change the mobile phone number of your bank card and credit card.

The precautions for changing the mobile phone number are as follows.

1, backup contact. The most important thing about the mobile phone number is the contact information, so before that, you should back it up with a card to avoid entering it yourself.

2. Unbound bank card. The second important thing is to change the bank card information. Our bank cards are all in real-name registration system, and we all need phone numbers. We should go to the business hall to change it in time.

3. Cancel the Taobao card. The information on Taobao is easy to leak. Once the number is changed, it should be changed in time to facilitate the store to contact.

4. Unbound WeChat account. The number launched by WeChat is bound to its own mobile phone number and should be updated in time.

5. Cancel the membership cards of major shopping malls. Membership cards have their own personal information, and now most of them can directly report their mobile phone numbers, so it is very important.