WhatsApp does not tell you when someone blocks you. That is deliberate: a notification would turn a quiet way of removing yourself from a conversation into a confrontation. It also means there is no way to confirm a block — only signs to read.
Here are the seven, and what each one actually tells you.
One: a single grey tick
Your message shows one grey tick and never a second. Normally two grey ticks mean the message reached their phone and two blue ticks mean it was opened. A message that stays on one tick has not been delivered at all.
This is the clearest of the seven, because it is about delivery rather than attention.
Two: their status updates vanish
Their status stops appearing in your list even though they are still posting.
Three: the profile photo never changes
You keep seeing an old photo, or a blank profile picture, while they have updated theirs.
Four: no blue ticks, ever
Your messages never reach two blue ticks even when you would expect them to have been read.
The article is careful here, and so should you be: a missing read receipt has other causes. Read receipts can simply be switched off, by them or by you.
Five: calls will not connect
Voice and video calls to the person fail.
Again with a caveat. A failed call can be poor internet, a phone that is switched off, or weak signal — none of which is a block.
Six: you cannot add them to a group
You are unable to add the person to a WhatsApp group, even when you are the group's admin.
This one is quietly strong, because being admin removes the most common innocent explanation.
Seven: last seen and online disappear
You can no longer see their last seen time or whether they are online.
How to read them together
Every sign on this list has an ordinary explanation. Last seen can be hidden in privacy settings by anyone. A profile photo can be restricted to contacts. Read receipts can be off. Someone can be abroad with a dead phone.
What makes a block likely is the combination: delivery stuck on one tick, and no status, and no profile photo, and calls failing, all at once and persisting over days. One sign is noise; four together, over time, is a pattern.
And it is worth saying plainly: there is no app or website that can confirm this for you. Anything claiming to check whether you have been blocked is asking for your number and your contacts, and has no access to the information it says it is checking.
Blocked, or just gone
There is one explanation that produces almost every sign on this list at once, and it is the one people forget: the account has been deleted, or the number has changed.
A deleted WhatsApp account also leaves messages on a single tick, shows no status, no profile photo, no last seen, and refuses calls. From your side it is nearly indistinguishable from a block. The giveaway, where there is one, is group membership: a blocked contact still appears in groups you share, while a deleted account's history remains but the person is gone from the member list.
What to do with the answer
It is worth asking what the confirmation would be for. If the purpose is to know whether to keep messaging, the signs already answer that — messages are not arriving, and sending more will not change it.
If something genuinely needs to reach the person, use a different channel once, briefly, and leave it there. Repeated attempts from new numbers are how an ordinary block becomes a harassment complaint, and WhatsApp's own reporting tools treat that pattern exactly as it looks.
