I read somewhere that if you insert your sim in a Blackberry or an iPhone you can manipulate that number on the sim. You can either delete or edit it. Haven't been able to try that out yet though.
Sorry Trundle Explorer, I assumed that your link indicated something for us to do for the fix.
Updates on my phone are up to date, but it's an S6, I wonder if it doesn't work for this one.
Is there any way to double check that the auto updates include the Android one you mentioned?
Yes trundle, my phone updates automatically, it has Android 7.0 on it, but the phone number is still as unknown, although all the other details that you mentioned are correct underneath.
Thank you for your help.
I have just been into Tesco mobile about the same problem on the a8 we have been back about 6 times after trying everything like factory resting about 8 time had the SIM changed still the same
But today a helpfully staff member said the last thing to try in getting them to send me a blank SIM card so we can set it with our number it should be with me in three days so don't hold your breath I will be back