Here is an explanation of the most important permissions that Threema for Android requires:
- Read/write contacts
Required for address book synchronization. If the synchronization is off, contact data is not accessed. - Camera
Required for contact verification via QR code and for the built-in camera app. - Microphone
Required for Threema calls and voice messages. - Location
Used for the “Send location” feature. - Accounts
Used for contact synchronization resp. integration into the account management of Android. - Modify or delete the contents of your USB storage
Required for reading and storing media files (images, videos, documents). - Make and manage phone calls
Required to reject incoming phone calls while a Threema call is ongoing.