Sim manager is showing a different number

[ShiWarrior]

My phone came without a sim card
it was an upgrade

so i put my sim card from old phone into new phone

browsing my phone, setting it up etc., came to a page called "Sim Manager" on my Samsung A53

and its not showing my number ?

its showing a different number

 

[ShiWarrior]

That's usually because the SIM had a number ported to it at some point?

ok, so do I need to worry ? do i ignore it?

 

[ShiWarrior]

im just looking at the "about phone" page

and my number is not listed here either
saying a different number !!