1. Why does the login account synchronize information?
Because some mobile phones default to the information of the mobile phone before the login account is synchronized, this can be turned off. Different brands of mobile phones have different ways to turn it off, so you can look it up by yourself. The function of automatic synchronization is designed for the convenience of users, because when users change their mobile phones, they can use this function to quickly synchronize their account information to another mobile phone, or they can synchronize the contents of their mobile phones to the cloud and then synchronize them to other mobile phones. If users often use mobile phones, they must know the convenience of this function. Of course, some people who are unfamiliar with the use of mobile phones will easily encounter this situation, so you'd better take a look at your mobile phone.
2. How to avoid this kind of thing?
First of all, the first one is to turn off automatic synchronization and set it to manual synchronization. Although synchronization will be more troublesome later, it is better than revealing your privacy. Secondly, don't just log in to your account on someone else's mobile phone or mobile phone shop prototype, especially the mobile phone shop prototype, which everyone can access. The hero of this incident is lucky. If this is discovered by some lawless elements, it is very likely that it will be used as a threat to ask for property. Finally, don't use the synchronization function for private things! Because these are uploaded to the cloud! As long as you know your password, you can download it!
Generally speaking, the store found the owner of the problem pictures in the prototype, and asked him to delete the pictures that he accidentally synchronized on the prototype.