With private chats, you can protect individual chats and hide them from the chat list. This way, confidential chats are protected from prying eyes. Push notifications for new messages in a private chat contain neither a message preview nor the name of the sender.
Android
Navigate to “Threema > Settings > Security > Locking mechanism,” and select “PIN,” “System Screen Lock,” or “Biometric.”
To mark a chat as private, tap and hold the chat, and select “Mark as private chat.” When attempting to access the chat, the selected locking mechanism (see above) comes into play.
To hide all private chats, tap on the menu icon in the chat list, and choose “Hide private chats.” To show all hidden chats, choose “Show hidden chats” in the chat list’s menu, and enter the PIN.
iOS
Navigate to “Threema > Settings > Passcode Lock,” turn passcode on, and enter a passcode. If you additionally turn on the Touch ID or Face ID option, your fingerprint or Face ID will unlock your private chats instead of the passcode.
To mark a chat as private, swipe right on the chat, tap on the lock icon, and select “Mark as Private.” To access the chat, the passcode, fingerprint, or Face ID is needed.
To hide all private chats, go to “Settings > Privacy” and activate the “Hide Private Chat” option. To show all hidden chats, deactivate the “Hide Private Chats” option in the Settings and enter the passcode.
