I bought an iPhone 4s and put my SIM in that and activated iMessage and Facetime. After a few weeks, I gave my wife the phone to try and activated iMessage on her sim too, from the same phone.
She then decided on buying an Android and hence I got my iPhone back. Now when I put my SIM back in there, it still shows her number on the iMessage and Factime settings.
I tried resetting the Network settings as recommended by a lot of posts and also tried changing the Payment information with the correct phone number. Neither approach seems to work.
Any suggestions ?
Put her sim back in the iphone and have her log out of imessage. Then you can use your sim.
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