Ticks and message info

• A clock: waiting for a connection.
• One tick: our server has it.
• Two ticks: it reached one of their devices.
• Coloured ticks: read. Only if both of you turned on "Read receipts".
• A red mark: it cannot arrive. Tap it to see why.

Tapping the ticks, "Info" in the menu of one of your messages, or the info button while one of your messages is selected, opens "Message info": each of their devices and how far your message got there.

• "Not delivered - this device of Anna's no longer exists": they removed or replaced it.
• "Not delivered - Anna's KUVRT needs an update": once they update, it arrives within a day.
• "Not delivered - it waited too long and was never picked up": where "Try again" shows, it tries once more.

1. "Delivery ticks" and "Read receipts" are in Settings, then "Privacy". Open Privacy

"Delivery ticks" are on at first; turning yours off hides theirs too. "Read receipts" are off at first and work only when both of you turn them on.