Sent Icons
You sent a Snap without audio
You sent a Snap with audio
You sent a Chat
Depending on privacy settings, a gray pending icon may appear if someone has not accepted your friend request
Opened Icons
A friend opened a Snap without audio
A friend opened a Snap with audio
A friend opened a Chat
Received Icons
You have an unopened Snap (or group of Snaps) without audio
You have an unopened Snap (or group of Snaps) that includes audio
You have an unread Chat
Viewed Icons
Your Snap sent (without audio) has been viewed
Your Snap sent (with audio) has been viewed
Your Chat has been viewed
A Snap or Chat is pending and may have expired
Screenshot Icons
A screenshot has been taken of your Snap without audio
A screenshot has been taken of your Snap with audio
A screenshot has been taken of your Chat
Replay Icons
Your Snap sent without audio has been replayed
Your Snap sent with audio has been replayed