Recently WhatsApp updated their calling interface UI to whole new material design and after that we didn't saw any major noticeable change in their app's UI.
Today we saw a dialog a box popping up at our screens asking for the feedback of the quality of your WhatsApp call. We had some quality troubles before the box popped up and after second or third try, we saw the box on our chat screen asking to rate and write about the call specifically. Check the screenshot below :
WhatsApp is doing their best to maintain the quality and use less data usage for their users, that's why they are rolling out this feedback box for everyone so that they can fix or make their service better.
We are currently happy with their service and soon they will be taking over our normal calls. Tell us in the comments, can you really think of replacing it with regular calls?