My phone number of USIM still wasn't changed.
I changed my number last year. Currently I can use the new number that has been changed. However, if I check my number in the phone's settings, my old number is still displayed. This sometimes creates problems.
For example, when I sign up for or log in to a specific site, the site sends me a specific number as a text message. At this time, my previous number is displayed. I want to solve this problem.