It has been recently noted that WhatsApp has issued an OTA update to its app. The app will now be able to show when a message has been read by the receiver by marking the tick marks in blue, which you can see in the image above. Prior to this, the tick marks represented that the message had been successfully sent with one tick, and two tick marks meant that it had been delivered.
Now with the blue tick marks coming into play, it basically means that you will now know when your messages have been read, so no more wondering as to why your messages aren’t being replied. We should point out that the changes are made OTA which means that you will not be able to find the update in your respective app stores.
Assuming you already have the latest version of WhatsApp installed, you should start noticing the blue check marks. If you don’t, we can only assume the update is staggered and you should get it in a short amount of time.