iPhone does not allow you to have privacy due to its blackbox nature, and is simply a false marketing assurance by Apple to you. Recently, an unpatchable hardware flaw was discovered in Apple's T1 and T2 "security" chips, rendering Apple devices critically vulnerable.
Apple's CSAM mandatory scanning of your local storage is a fiasco that will echo forever. This blog article should be of help. But they lied how their system was never hacked. I doubt. They even removed CSAM protection references off of their website for some reason.
Pretty sure atleast the most coveted privacy innovation of App Tracking protection with one button tracking denial would work, right? Pure. Privacy. Theater.
Surely this benevolent company blocked and destroyed Facebook and Google's ad network ecosystem by blocking all those bad trackers and ads. Sigh. Nope. Now it is just Apple having monopoly over your monetised data.
Also, Android's open source nature is starting to pay off in the long run. Apple 0-day exploits are far cheaper to do than Android.