After I changed my new mobile phone, I gave the old one to my home. The mobile phone has been restored to the factory settings, but Taobao will push my shopping information.

The mobile phone has the function of automatically storing user data. If you change your mobile phone, the big data software such as Taobao, Alipay and Baidu on the old mobile phone will be deleted, and the old mobile phone will be given to your family. The other party downloads commonly used software such as Alipay, WeChat and Taobao by mobile phone. Even if you restore the factory settings, it is useless, because you have registered with your mobile phone number, bank card and ID card before, and all of them have information, so some software will still log in to your old mobile phone after being downloaded again. It is best to clean up the data on the old mobile phone, clean up the garbage such as cache, download and install the software again, and install the family's mobile phone card. Re-authenticate software users, turn off the notification function of push, often use and log in family accounts, and turn on notifications such as push after family personal information and usage data are automatically stored in mobile phones.