http://ssd.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/zh-hans/module/guide-pratique-utiliser-signal-pour-android
To enable “disappearing messages” for a conversation, open the screen where you are able to message your contact or group. From this screen, tap the name of the contact or group at the top of the screen, then tap “Disappearing messages.” A dialogue will appear that allows you to choose how quickly messages will disappear: After selecting this option, tap “OK,” and then tap the “←” on the top-left corner of the screen, and you should see information in the conversation...