How do I know if a person blocked me on imo?

Question

Accepted Answer

If the call failure shows "your buddy is not

online" ( standard SMS rates may apply )

and all the messages you send always show

1 check (√), you are blocked by him/her.

As of now, you can only be unblocked by

him/her, you may try to contact him/her via

your common friends, group, etc.