To know if someone has blocked you on Telegram, look for these key signs:

• Messages not delivered: When you send a message, it shows only one checkmark (sent but not delivered) and never changes to two checkmarks (delivered). This suggests your messages are not reaching them

• Profile picture disappears: You can no longer see their profile photo; it reverts to initials. This can also happen if they changed privacy settings, but combined with other signs, it indicates a block

• Last seen status shows "last seen a long time ago": Instead of a recent timestamp or "online" status, you see this phrase, indicating they either blocked you or have been inactive for a long time

• Voice or video calls fail: Attempts to call them on Telegram immediately show a "Call Failed" error, meaning you cannot reach them via calls

• Cannot start secret chats or add them to groups: You will be unable to initiate secret chats or add the contact to new group chats if blocked

• Check with another Telegram account: If you use a different account and can see their profile picture, status, and send messages normally, it confirms your main account is blocked

Using these signs together gives a reliable indication that you have been blocked on Telegram. No single sign is definitive alone, but combined they provide strong evidence