January 13, 2021
Telling users when friends/contacts use the app
Signal inform users each time one of their contacts (sim card) joins the app. A simple reminder to prefer Signal to its alternatives. This is a trick that Telegram also used massively at its beginning.
About the app:
Signal is an encrypted messaging app founded in 2014. Like in Whatsapp, the user can Signal to make one-to-one and group discussions, voice and video calls.