I am guessing that you have posted in the wrong forum as this is for the Samsung Galaxy S22 series which has not been officially released yet.
If a person uses their original sim card then as the number is assigned to thst then the number should be the same.
If the original sim card isn't the right size then a network can perform a sim swap which moves the number and tariff to a right sized blank sim card.
If using an eSim then the network can sort this
I would suggest that you contact your network customer services to have your account looked at.
Sometimes a person thinks they've upgraded but have actually opened up a new contract which comes with it's own mobile number.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
Cheers @ironass and @BandOfBrothers ! 😎
I've moved the topic to the correct forum, as the OP looks to have been referring to a Galaxy A22. 😉