When joining group calls with lots of participants, the mic is now automatically muted
Improved indication of ongoing group calls in chat overview
Improvements in relation to editing groups
Improvements in relation to Threema Safe error messages
Fixed a bug that could lead to redundant status messages in relation to group calls
Other improvements and minor bug fixes
Threema Libre: Twemoji is used by default to display emojis
Fixed a bug in relation to linking a phone number with a Threema ID in the setup wizard
Fixed a bug that could prevent calls from being started in certain conditions
When joining group calls with lots of participants, the mic is now automatically muted
Improved indication of ongoing group calls in chat overview
Improvements in relation to editing groups
Improvements in relation to Threema Safe error messages
Fixed a bug that could lead to redundant status messages in relation to group calls
Other improvements and minor bug fixes
Text formatting is now supported in GIF captions
Fixed a bug that caused voice messages on some smartphones to be distorted
Updated the Zip4j library to the current version (fixes CVE-2023-22899)
Restoring a backup will now be cancelled if an incompatible backup file is used
Voice messages from contacts with an iOS device will now be forwarded as voice messages instead of audio files
A system notification will now be displayed if a contact downgraded to an app version that does not support Perfect Forward Secrecy
Adjustment of the data backup so that file names no longer show metadata (reported by Thore Göbel)
Other improvements and minor bug fixes
Text formatting is now supported in GIF captions
Fixed a bug that caused voice messages on some smartphones to be distorted
Updated the Zip4j library to the current version (fixes CVE-2023-22899)
Restoring a backup will now be cancelled if an incompatible backup file is used
Voice messages from contacts with an iOS device will now be forwarded as voice messages instead of audio files
A system notification will now be displayed if a contact downgraded to an app version that does not support Perfect Forward Secrecy
Adjustment of the data backup so that file names no longer show metadata (reported by Thore Göbel)
Other improvements and minor bug fixes
New: end-to-end encrypted group calls (audio and video)
New: agree/disagree feature also available in group chats
New: edit received images on the fly and send them right back (tap and hold > pencil icon)
New: send and receive messages with Perfect Forward Secrecy
Support for new chat server protocol
Minor bug fixes
Security improvements:
Improve chat server authentication protocol to prevent a payload confusion and a theoretical replay issue
Introduce an additional warning message if a connection from another device using the same Threema ID has been detected since the last time that the app was used
Disable compression of Threema Safe backups to rule out the theoretical possibility of a compression oracleThanks to Kenny Paterson, Matteo Scarlata and Kien Tuong Truong of the Applied Cryptography Group at ETH Zurich for bringing these issues to our attention
