ON! Arrow on Telegram

What it signals here

sticker mapping

Maps to activation or 'go' sticker packs, often used in productivity or hype sticker sets.

channel use

Channel admins use it to announce that a livestream, sale, or giveaway is currently active.

group meaning

Used in group chats to confirm a plan is still happening or to rally members.

bot context

Bots may use it in status messages to indicate a service or feature is currently enabled.

See it elsewhere