WHATSAPP CALLING FEATURE ACTIVATION - SIMPLE STEPS

Hi There!
The much awaited update has came for whatsapp!!!
Free online calls - To activate your whatsapp calling feature just follow these simple steps

Step 1 
- Download the latest apk ( This update is not available in playstore)
             Download Link
Step 2 
- Install the app
           

Step 3 
- Comment your number in the comments box
Step 4
- I will call you... Attend the call for atleast 5 seconds.

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Then your whatsapp user interface will change like this....

                     Enjoy whatsapp!!!

    Is the quality of service  better than facebook messenger??
    Have a word to say? Do let us know.