Tests should be covered by behat. Test on one device of your choice: Enter the app with an student user Navigate to more > App settings > Synchronisation Check you can see the list of accounts. Go offline. Check Accounts list disappears and a message to connect is displayed. Connect to a wifi and check it comes back to the previous state. Enable "Data saver" setting. (already enabled) Change your connection to cellular connection (turn off wifi). Check Accounts list disappears and a message to connect to a wifi is displayed. Connect again to wifi. Previous state should be restored. Check you can sync your current site (on top) and other sites as well. Check some accounts has "Log in to Synchronise". Click on the login button (next to the account). Check you can login navigate again to the Sync settings page. Check you can sync the site. Now Navigate to user menu > Preferences. Check you can see Synchronise now box. Check you can sync. Go offline. Check a message to connect is displayed and you also cannot sync. Go online to cellular connection. Data saver should be enabled, so the message to connect to a wifi should be shown and the sync button should be disabled. Go online (cellular again). Disable the Data saver from Sync settings page and go back to the Preferences page. Check you can sync.