How to transfer my number to my new phone

Someone should have set up the new phone for you when you bought it. Take it to your cellular provider and they can go through the steps to activate it. Take the old phone and sim card with you.

Try just taking the SIM card out of the old phone and putting it into your new one before then setting this up as a new phone. This worked for me when I switched from an SE to an iPhone X. Otherwise get in touch with your provider! Hope this helps you! Regards, Ian.