How do I stop apps from accessing more information than they need?

Reviewed answer

Review permissions and allow only access that supports a feature you actually use.

On Android, search Settings for Permission manager. On iPhone, open Privacy & Security and review the listed permissions.
Remove unnecessary access to contacts, photos, location, camera, and microphone.
Choose limited photos, approximate location, or access only while using the app when those options fit your needs.

Get help if

An app insists on unrelated permissions or asks you to disable protections before it will work.