Send the following on WhatsApp
Continue to Chathttps://www.crazyengineers.com/threads/micromax-funbook-ultra-hd-p580-canvas-tab-p650e-have-voice-calling-on-android-os.73587
https://www.crazyengineers.com/threads/micromax-funbook-ultra-hd-p580-canvas-tab-p650e-have-voice-calling-on-android-os.73587