For this demonstration, we are going to download the iBooks app. This application from Apple really should be one of the default apps, but. WhatsApp Messenger: More than 1 billion people in over countries use WhatsApp to stay in touch with friends and family, anytime and anywhere. WhatsApp. A quick overview on how to download apps on a Windows 10 phone Read on to learn how to: find and access your phone's app store search and browse for.