Question: Is it possible to upgrade Enterprise apps by using 'silent installation' on mobile devices?
Answer: The 'silent installation' of apps means that the user of the device does not receive any prompts to update or install the app. Instead, the app updates or installs itself automatically in the background. The default behaviour of mobile operating systems (iOS and Android) is to prompt the user of the device when an app install or upgrade is requested (in other words, the default behaviour is for the app installation to not be silent).
If the app installation prompt is to be hidden, then the use of 'Supervised' mode on iOS should be used. For Android devices, silent installation of apps is possible with Android Enterprise (when using an 'Android Work' profile) and also on Samsung KNOX (when using the KNOX app container).