There is no upgrade path from All On Mobile v3.x to v4. Mobile Devices with All On Mobile v3.x installed and automatic updates enabled will not be asked to upgrade to All On Mobile v4. All On Mobile v4 must be installed from the devices App Store.
After the early adopter program expires, AllOnMobile v4 will be available from:
Google Play Store
Apple App Store
Microsoft App Store
Simply search for ‘All On Mobile v4’, and make sure you have the new All On Mobile logo.
v3 and v4 Compatibility
Although you can install AllOnMobile v3 and v4 on the same Mobile Device, you should not log into AllOnMobile v3.x and v4 at the same time, with the same User credentials, on the same device. Any submitted Jobs may be corrupted if you do.