You change your profile picture on Signal, the open-source messaging app, anytime from the app's Settings menu.

You can mark any message as unread on Signal in the Android and iPhone versions of the secure-messaging app.

Instead, you need to open and register Signal on the new phone and select an iOS transfer. Then you use a QR code to connect ...

Signal has been the most high-profile app in the news lately because of the controversy surrounding its use by Defense Secretary Pete Hegseth. Signal is a secure messaging platform known for ...