[root] [enable calling feature in whtatsapp] topic

for rooted LOLLIPOP devices just use this:
thanks to @ RVR
STEPS:-
1- Install the latest apk
2- Open any root explorer (es file explorer
preferred ) and navigate to /data/data/
com.whatsapp/shared_prefs/
com.whatsapp_preferences.xml
3- Add these 2 lines anywhere in the file but within
the <map></map> and save
<boolean name="call" value="true" />
<string name="call_allowed">all</string>
4- Then go to Settings/Apps/Whatsapp and force
stop it !
Open the app again
You have now enabled calls !!!!!!!! Enjoy!!!!
FOR THIS TO WORK BOTH PERSONS(SENDER ND
RECEIVER) SHOULD HVE THIS ENABLED AND U
HAVE TO ANSWER A CALL FROM SOMEONE WHO
HAS ACTIVATED THIS. ITS LIKE INVITATION. GOOD
LUCK