Hi dom7, We are sorry to hear that you are thinking of switching from Samsung. I would like to inform you that many Samsung phones, tablets, and wearables are made with the Samsung Knox platform built right into their architecture, safeguarding Samsung consumers and provides a secure environment for apps on all Galaxy devices.
Hi dom7, Please check if you are able to disable the apps that are using specific permission by going into Settings, search for and select "App permissions".
Tap a permission (such as Contacts, etc.,) to see which apps are using that permission. Tap the switch next to your desired apps to turn their access on or off.