What are the system requirements for Threema calls?
You can make Threema calls using the Android and the iOS version of the Threema app. The following system requirements apply:
- Android: Threema 3.2 for Android or above on Android 4.1 or above (to receive calls when Threema is in the background, Google Play Services are required)
- iOS: Threema 3.0 for iOS or above on an iPhone 5s or above running on iOS 9 or above
These requirements must be met by both the caller’s and the callee’s device.
Please note that Threema calls are not supported on devices running BlackBerry OS.