Backhand Index Pointing Up on Telegram

What it signals here

sticker mapping

Mapped to assertive pointing sticker packs often used in group debates to highlight a specific message.

channel use

Channel admins use it to point to an above post or to direct members to scroll up for important info.

group meaning

Used in group chats to agree with a member's statement or to call attention to a specific prior message.

bot context

Bots sometimes use this emoji in menus to indicate upward navigation or a parent menu item.

See it elsewhere