The Apple ID has been logged in by someone else. What should I do if my mobile phone receives a puzzling text message?

If you bought your mobile phone in a mobile phone store and someone else set it up for you, and you didn't add your own appleID, then you can use it.

It's someone else's ID number. In other words, all people who buy mobile phones in his store may use this ID number, so Apple

FACETIME, IMESSAGE can be received by any mobile phone with this ID. If you don't play with Apple's settings,

In other words, people can locate you, that is, they can know where all the mobile phone users who use his ID are.

First, go to Settings-Privacy-Location Services (off), Settings-Information-Imessage (off), Settings-

FaceTime (closed), so you can only receive the information of your mobile phone number.

Apply for an appleID and change it to your own. Apple's settings are actually reasonable, you will know after playing.

Yes

Apple ID was launched by Apple for its iWork, iTunes Store, Apple Store and other products.

Authentication system based on. As a fully functional account, Apple ID allows users to access various resources of Apple. because

An Apple ID can be used for a variety of products and services provided by Apple. You can also call an Apple account.

MobileMe account, Mac account, iTunes Store account and iChat account.

Apple ID can be used to perform all Apple-related operations (including using? Where does ICloud storage come from? Under the App Store

Download apps and buy songs, movies and TV shows from the iTunes Store.

Apple ID requires an email address. With the password, users can easily download it in the App Store on iPhone.

Install and update software.