App Updater allows you to install and update applications easily over the air when you have the Android APK file. On XP5s and XP3, App Updater comes pre-loaded and on XP8, App Updater can be installed via the Google Play™ store. By creating an App Updater profile on Sonim CLOUD, you can ensure your devices always have the latest versions of apps. App Updater will check in with Sonim CLOUD on a regular basis to ensure devices are up-to-date. For more information on App Updater please contact the Sonim Customer Experience Center at 1-833-MY-SONIM (1-833-697-6646) or email us at [email protected]. We are open 24 hours a day, Monday-Friday and we will further assist in troubleshooting.