How to know if someone has blocked you on WhatsApp

It is not uncommon to meet spammers on WhatsApp - or just people with whom you don't want to keep in touch. The messenger allows you to interrupt unwanted communication by blocking contacts. But how do you know that you were banned? There is no way to check this in the application, but here are some indicators that a person has blocked you:

1. You don't see his online status (you can't see if he is online or not, or when he last logged in).
2. The profile photo is not updated (it is very easy to check if a person is in the contact list of friends - just compare which picture is displayed on the avatar).
3. You can send messages, but the “Sent” status does not change to “Delivered”. You won't be able to get through either.

WhatsApp notes that the developers deliberately did not add any tools to check it was possible for sure - this was done primarily in order to protect the user if he decides to someone block. So, even the signs noted above can only mean that the user has not entered the messenger for a long time or even deleted it from the smartphone.