How to Hide Your IP Address on iPhone in Safari

Tap Settings.  Tap Safari. Tap Hide IP Address.

How to Hide Your IP Address on iPhone Using iCloud Private Relay

Tap Settings.   Tap [your name].  Tap iCloud.  Tap Private Relay.  Move the Private Relay slider to on/green.   Tap IP Address Location.

Blocking your IP is a useful privacy measure that usually

our IP to determine what country you're in.

This is important if you need to be in a certain country and/or time zone to use certain sites or programs.

Mail Privacy Protection: This feature built into iOS 15

Hide IP in Cellular Settings: You can block ad trackers in both Mail and Safari with just one setting.