Calls & Messages2
Show or Hide Caller ID on Outgoing Calls
Your number pops up on the other person's screen even though you never turned that on, or it stays hidden when you need it visible for work calls. This behavior comes from a network-level default that Samsung phones inherit unless you change it in the phone app. The setting sits separate from Do Not Disturb or blocking and gets missed easily.
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Calls & Messages2
Change Contact Name Format
If your contacts list shows names as First Name, Last Name and you would rather see Last Name, First Name, the display setting inside the Contacts app controls that order. This has nothing to do with how a contact was originally saved, so switching the format does not touch any contact data. The change only affects how names appear across Calls and Messages, not the underlying entries or numbers.
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