(TrendHunter.com) Proving itself once again to be one of the most feature-enabled messengers and boasting encryption and convenience in one, WhatsApp is now beta-testing its multi-device functionality. The feature... (TrendHunter.com) Proving itself once again to be one of the most feature-enabled messengers and boasting encryption and convenience in one, WhatsApp is now beta-testing its multi-device functionality. The feature...