It's a really frustrating feeling, isn't it? When you send a message on WhatsApp and suddenly, there's just silence. You start to wonder, 'Did they see it? Are they just busy? Or… did they block me?' I've definitely been in that situation, and the uncertainty can be the worst part. While WhatsApp doesn't send you a notification saying 'You've been blocked!' (thank goodness, that would be awkward!), there are several clear signals that, when put together, can give you a pretty definitive answer. First off, let's talk about the 'Last Seen' and 'Online' status. This is often one of the first things I check. If you can no longer see someone's 'last seen' timestamp or their 'online' status when you open their chat, it's a strong indicator. Now, before you jump to conclusions, remember that some people simply hide their 'last seen' status in their privacy settings. So, this alone isn't 100% proof. But if you used to see it and now you don't, it's definitely a red flag. Next, take a look at their profile picture. If you suddenly can't see their profile photo anymore, or if it's stuck on an old, default gray image even when others have updated theirs, it's another piece of the puzzle. Again, someone might just remove their profile picture or set it to be visible only to their contacts, but if you combine this with other signs, it becomes more telling. Then there are the message delivery ticks. This is probably the most reliable sign for me. When you send a message, you usually see one grey tick (message sent), then two grey ticks (message delivered to their phone), and finally two blue ticks (message read). If you're blocked, your messages will consistently only show a single grey tick. They will never turn into two grey ticks, let alone blue ones. This is because WhatsApp isn't delivering your message to their device. It's a pretty clear indicator that something's up. Another clever method, as mentioned in the original content, is trying to 'Create a WhatsApp Group'. I've tried this myself out of sheer desperation! If you try to add the suspected contact to a new WhatsApp group and you receive a message saying 'Couldn't add [Contact Name],' or similar, then it's a very strong sign you've been blocked. WhatsApp prevents blocked contacts from being added to groups by the person who blocked them. Finally, try giving them a call through WhatsApp. If your calls don't go through and repeatedly ring without connecting, or if they instantly drop, it's another piece of evidence. This, combined with the lack of profile picture, last seen, and message delivery, paints a very clear picture. It's important to remember that no single sign is foolproof on its own, as privacy settings can mimic some of these effects. However, if you observe several of these signs simultaneously – no last seen/online status, no profile picture, messages stuck on one grey tick, and inability to add them to a group – then you can be pretty certain that you've been blocked. It's not a fun discovery, but at least you'll have the clarity you need to move forward.