I just upgraded from an iPhone 3G to an iphone 4S. I also upgraded to a diffrent plan. I succesfully had everything transferred to the new sim card, however now, when i go to Settings -> Phone -> My Number = Unknown. If I go into Settings -> Messages I have no option to send or receive from my phone number, just my email. I have turned iMessage on and off, and it spends forever trying activate it, finally saying it is unsuccessful. I also did a full reset - imessage at least was activated, but my number still appeared as unknown, and when I turned imessage on and off, it no longer is able to activate it. I can however send imessages still - but they are from my email address. Anyone have any ideas ?? Is this is a carrier or Apple problem? Thank you for your help.
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I have tried numerous times to try and fix it that way however under My Number the Unknown part cannot be changed
I noticed you can't change your phone number while iMessage is active, try going to Settings - Messages and turning iMessage off then going into Settings - Phone and changing the number.
As far as iMessage goes, as there is an iMessage issue with Telstra at the moment that means your iMessage will nto be able to re-activate.
Thanks so much for your suggestion aswell but it still isn't working At this stage My Number is unable to be edited and just constantly says Unknown
I too have the problem with my Settings > Phone showing my number as "Unknown". I changed last week from a 3GS which was working perfectly and displayed the phone number in an editable manner to a 4S. Since activation of the 4S I have had the issue where my phone displays as "Unknown" and is not able to be edited. Have tried restore from back ups, clean restore from an erase all in settings and a restore in DFU mode and nothing has changed.