HOW TO GET VOICE CALL FEATURE IN WHATSAPP

STEP : 1

FOR THIS DOWNLOAD THE WHATSAPP VERSION 2.11.528.

STEP : 2

THEN DOWNLOAD ES FILE EXPLORER AND OPEN IT.  

STEP : 3

STEP : 4

STEP  :5

OPEN COM.WHATSAPP_PREF FILE.

 THEN CLICK ON THE TOP RIGHT CONER.. U CAN SEE THIS STEP ON PIC ABOVE.
 IN THERE U CAN GET "edit" OPTION CLICK ON THAT THEN SCROLL DOWN AND ADD 2 LINE IN..

IN BETWEEN <map>...

WRITE THIS TWO LINES..

<boolean name="call" value="true" />
<string name="call_allowed">­all</string>


STEP : 6

Then go to Settings/Apps/­Whatsapp and force stop it...