Enable WhatsApp Calling Feature On iPhone No Jailbreak [Official

WhatsApp calling on their iPhone even without the help of Cydia tweak. However, there is some obscurity about its functioning as we are not sure whether or not it functions perfectly. If you wish to try, you can give it a look and see how it works. But it is working perfectly in iPhone 4.
Steps How to Activate: (Open Only in Safari)
Step #1. Install the latest beta version of WhatsApp from here

https://dev2.whatsapp.net/ios/WhatsApp/

Or

Download from Mirror and Use Itunes to install latest Whatsapp

Step #2. Once you have installed WhatsApp beta on your iPhone, tell anyone who has WhatsApp calling enabled to give you a call. When you receive a call, your WhatsApp calling feature will be activated.
That’s it!

Activation Procedure (Same for iOS & Android)
Update to latest Version Using Links or Mirrors Only.
Send Me a MSG On Whatsapp “ONHAX” Without Quotes to +919776321125
Receive Call For at-least 10+ Seconds then simply go back
Activated! Congo.
NOTE: This Activation Process Will start working @ 4 PM According GMT +5.30 (India Time)

Screenshot

Whatsapp Official Activation Link | Mirrors