My number unknown

the same here ...i cahnged my sim card ...now my number is unklnown and i cannot edit it!!

what to do??

Apparently you need to contact your network provider and ask for them to send you a sim update/ refresh. It's a text MSG that you need to just open up and delete it , then turn your phone off and back on, Hey presto.

Just got a working solution after searching for weeks.

I have an unlocked 4s I use with pepephone in Spain and my number was showing "unknown" with impossibility to change it.

I got the sim card from someone who's got an official iPhone carrier, Movistar, put it in my iPhone, went to the Phone settings and could see the Movistar sim card number with possibility to change it. I clicked on it to change and while in edit mode took of the friend's sim card and put back mine, waited for it to get the network while still being in edit mode, then input my own number and saved.

Now even after rebooting the phone my own number shows and is editable. Problem solved.

Great!!! this worked for me too, thanks!! I was searching for weeks too but finaly got a way to solve it!!

Thank you perspixe

Splendid. After struggling for several days with support and trying anything I could find online this was the solution for me also. With a slight difference - I already had a carrier SIM inserted. Everything seemed to work ok, but my number was "unknown". Using your example, I simply navigated to the phone settings and to the screen where you manually enter your number, then popped out my SIM, got the notification that there was no SIM inserted, typed in my number and saved (without error for a change!), then popped the SIM back in. The number stayed put and several reboots later my number still shows correctly. Phew!

Well done. Thank you.

PT