Acer S510 - Manual (Page 48)

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Closing an application
To close an active application, in the Application menu tap Settings > Apps. Swipe
over to the Running tab, then tap the program you wish to close. Select Stop to
close the program.
Uninstalling an application
You can remove programs installed on your smartphone to free up extra storage
memory.
1. In the Application menu tap Settings > Apps.
2. Swipe over to the Downloaded tab.
3. Find the application in the list and tap on it.
4. Tap the Uninstall button and then tap OK
Warning! You should only remove programs if you are familiar with the
Android operating system.
Restoring to factory settings
You may perform a clean boot to restore your smartphone to the factory settings.
Note: Before performing a clean boot, ensure that your smartphone is not
locked. Press any key or tap the screen to see if the phone responds.
Warning! You should only perform a clean boot when all other options
have failed to restore your smartphone to an operational state.
Warning! This will erase all your personal information, any contacts stored
on your phone and any programs you installed.
If your phone is responding to screen input, then open Settings from the Application
menu. Tap Backup & reset > Factory data reset > Reset phone and then Erase
everything to format your phone.