HT204686: How to erase your iOS device and then set it up as a new device or restore it from backups
Learn about How to erase your iOS device and then set it up as a new device or restore it from backups
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Helpful answers
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Mar 30, 2013 8:19 PM in response to Rjbartby ChrisJ4203,You can go to Settings>iMessage and check to see what is showing under Send & Receive. Your phone number should be there, as well as any other device you have that is using the same Apple ID. The phone number should be taken from your phone when you activate iMessage. Again, if there are other devices that are using the same Apple ID, they would be listed there as well. See which ones have a check mark. You can remove those you do not want to use.
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Dec 6, 2013 12:11 PM in response to ChrisJ4203by Clarissafromdu,In my case my phone number is not on the list, other phone number is there. How to remove the old phone number and how to register or add the number that i am using
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Dec 6, 2013 12:23 PM in response to Clarissafromduby ChrisJ4203,I am guessing that you have cellular service on your device first. If your number is not there, then you need to go into Settings>Messages>turn off iMessage. Wait a few moments and turn it back on again. iMessage gets the phone number from the carrier/SIM card. Something occurred during your activation. Just activate it again, that should correct it.