How do I deactivate my old phone?
You can turn off the Continuity feature that causes your incoming iPhone calls to ring elsewhere. The best way is to change the settings on your iPhone: Open the Settings app on your iPhone and tap Phone. Tap Calls on Other Devices.Dec 13, 2020
Do I have to deactivate my old iPhone to activate a new one?
If activating a new phone, ensure the old phone is powered off and allow several minutes for the deactivation of the old phone to complete.
How do I deactivate my old iPhone when I get a new one?
Go into Settings > iCloud and tap on your name. Once you've signed in, you will see devices as an option. Here you will see all the Apple devices you've signed into (if you have more than one activated). If you want to disconnect a phone from your account, tap on it and tap on remove from account.Dec 29, 2015