For those who want to move to a different phone because of the limited AI features introduced in iOS 18, may I suggest the AT&T model. It plugs into the phone jack of your home and no cellular plan is needed. That may be your only option. If you think that you will find a Google or Samsung, or any Android phone without AI, you would be very wrong.
You will find that Apple has been the only manufacturer taking a responsible approach to AI, by not only allowing you to opt-in for the feature, but protecting your private information if you do choose to opt-in. You are not seeing any other company that has put as much effort into on-device processing and Private Cloud Computing when using any external source.