How can you tell if someone has blocked you on WhatsApp?

The call isn't going through, but for some reason, they can send messages. I don't know either; I was blocked once and couldn't call, but messages still came through. And I could see the profile.

It is impossible to 100% confirm a block on WhatsApp because the messaging app deliberately does not notify users of being blocked or provide explicit indicators. This is essentially done to protect user privacy. However, there are indirect signs that, when combined, may suggest another user has blocked you:
- You will not see confirmation that your message has been read by the other user (the double blue ticks);
- You cannot see updates to the contact's profile photo;
- You are unable to make outgoing calls to them;
- You cannot add this contact to a group where you are an administrator;
- You cannot see the contact's last seen time or any other status updates.
If you notice all these signs, it may (but not 100%) indicate that the user has blocked you. However, there could be other reasons for this as well.

WhatsApp does not notify you about being blocked; you can infer it from the avatar. If there was one, it becomes invisible immediately after being blocked. Otherwise, you'll have to guess.

But if someone isn't responding to you, why would you want such a person anyway?

When blocked, also:

No matter how many messages you send, they appear sent but never reach the recipient. It looks as though the message hasn't been read, but in reality, it wasn't delivered due to the block, even though it appears sent.

Calls seem to ring endlessly with just a dial tone; you think you're calling, but the recipient never actually receives the call. However, this was the case a year ago regarding calls—I'm not sure about now. But regarding avatars and messages, everything remains the same. Statuses also become invisible.

When you send messages to someone who has blocked you, you will see a single tick below the message, whereas if you are not blocked, you will see two ticks indicating it has been delivered.

1. The profile picture is no longer visible. Messages are not delivered (1 tick). 3. The status is not visible. This is 100% confirmation that you have been blocked. Of course, if the person never had a photo to begin with, it's harder to tell.

It's a glitch with the internet/WhatsApp itself, not a block.
When blocked, you can't see anything.

The notifications about messages being read and when a user was last online can be turned off without blocking. I have these settings disabled for everyone. I don't need everyone knowing when I was last online and when I read messages, it's like some kind of surveillance. And when you block someone, a message pops up saying that the person won't know you've blocked them. By the way, calls and messages from blocked contacts don't go through for me either.

That means they're using a proxy.

It seems like you've typed "Yftooue," which doesn't appear to be a recognizable word or phrase in English or any other language I'm familiar with. Could you please provide more context or clarify what you meant? If it's a typo or an abbreviation, let me know so I can assist you better.