iOS provides a lot less ways for third party apps to dig into the OS and interact with other apps. The same thing Android fans hate about it, the lock-in and lack of customizability, offers it a lot of additional privacy protection.
In general though, regardless of your phone ecosystem: Remove as many apps as you can from your device. Only install the ones you need and remove ones you don't frequently.
In general though, regardless of your phone ecosystem: Remove as many apps as you can from your device. Only install the ones you need and remove ones you don't frequently.