Send Apple Code via SMS

If multiple Apple devices use the same Apple ID to log in to iCloud, and the option of "talking on other devices" is turned on, then in the same Wi-Fi environment, all these Apple devices are turned on Bluetooth. When the iPhone has a phone, all logged-in iPad or Macs can answer the phone except the mobile phone.

If these devices are used by others, you can turn off "Call on Other Devices" in iPhone Settings-Phone. However, if you log in to iCloud by mistake, your address book, photos, etc. It may be synchronized to other people's devices, and it may be possible to lock your Apple device.

relevant information

There is a "Find My iPhone" function in iCloud. If this function is turned on, when you leave with your iPhone, people who share your account can check your location through this function and lock your phone with this function. If you have already signed in your Apple ID and iCloud account on your iOS device.

You will find that iCloud will synchronize a lot of data to the cloud, including photos, address books, calendars, memos and so on. Therefore, it is recommended to close some projects that you don't want to synchronize to other devices. You can close them one by one in Settings-"iCloud". Photos need to be turned off in the Photos option, so that they will not be automatically uploaded and synchronized to all devices.