Solved! How do you find your old number on new sim

Solution
A SIM card comes complete with a new number. Install the card then tap your Apps square and go to Settings>More>About Device and scroll down until your Telephone Number.

You can't transfer the number to the new SIM without paying a large fee. If you can't remember the old number, your Service Provider probably has a Your Account page in their website.
A SIM card comes complete with a new number. Install the card then tap your Apps square and go to Settings>More>About Device and scroll down until your Telephone Number.

You can't transfer the number to the new SIM without paying a large fee. If you can't remember the old number, your Service Provider probably has a Your Account page in their website.
 
Solution