Deregistering Your Phone Number from iMessage
If you are transferring your phone number to Mangomint, you will need to deregister your number from iMessage if you are transferring from an iPhone.
Please deregister your number from iMessage before your confirmed transfer date. If you don't, you will not receive texts from iOS devices once your number is transferred, and that history will be lost.
To deregister your phone number from iMessage:
Make sure your iPhone is connected to Wi-Fi.
On your iPhone, open the Settings app and go to Apps > Messages. Turn iMessage off.
Go to Apps > FaceTime. Turn FaceTime off.
Repeat these steps on any other Wi-Fi-only device logged into the same Apple ID as your iPhone, such as front desk iPads, MacBooks, etc.
To confirm your number was successfully deregistered, you can begin sending a text to your number from an iOS device.
If your number is green and the text input field says Text Message SMS, your number was successfully deregistered.
If your number is blue and the text input field says iMessage, your number is still registered with iMessage.
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