Samsung SM-A055M User Manual

Also see for SM-A055M: User manual

Settings94DiagnosticsTest your device using Samsung Members.On the Settings screen, tap Battery and device care → Diagnostics → Phonediagnostics. Select an item to test or tap Test all to test all items.Maintenance modeTurn on maintenance mode to protect your privacy while someone else is using yourdevice, such as when you send it for repairs.On the Settings screen, tap Battery and device care → Maintenance mode → Turn on.Ultra data savingMonitor and reduce your mobile data usage by preventing background apps from usingthe mobile data connection. You can also use the data compression feature to compressinternet data, such as images, videos, and webpages, accessed through the mobilenetwork.On the Settings screen, tap Battery and device care → Ultra data saving, and then tapthe switch to turn it on.• This feature may not be available depending on the carrier or model.• Some webpages or content may not be available when this feature is turned on,depending on the service provider or the mobile network conditions.AppsManage the device’s apps and change their settings. You can check the apps’ usageinformation, change their notification or permission settings, or uninstall or disableunnecessary apps.On the Settings screen, tap Apps.