iOS Users, see information here. Android Users, continue below.
Signal messages are private. You can send a Signal message if
- Your text input field says 'Send Signal message'
- Your send button is blue and has a lock
- Your message has a lock icon to the outside bottom corner of the message bubble
If you can not send Signal messages, then
- Re-register Signal
- Ask your contact to install or register Signal
- Edit your contact's phone number in your phone's contact list