What are the system requirements for Threema calls?

To place a Threema call, the following system requirements must be met by both the caller’s and the callee’s device:

  • Android
    • Voice calls: Threema 4.22 for Android or above on Android 4.1 or above
    • Video calls: Threema 4.4 for Android or above on Android 4.4 or above
    • To receive calls when Threema is in the background, Google Play Services are required.
  • iOS
    • iPhone: Threema 3.0 for iOS or above (voice calls) or Threema 4.6 for iOS or above (video calls) on an iPhone 5s or above running on iOS 10 or above
    • iPad: Threema 3.0 for iOS or above (voice calls) or Threema 4.6 for iOS or above (video calls) on an iPad Pro, an iPad Air, a 5th-generation iPad or above, or a 2nd-generation iPad Mini 2 or above running on iOS 10 or above
    • iPod touch: Threema 3.0 for iOS or above (voice calls) or Threema 4.6 for iOS or above (video calls) on a 6th-generation iPod touch or later running on iOS 10 or above
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