7
3. Before installing an open source application and
operating system (OS)
WARNING
If you install and use an OS other than the one provided by the
manufacturer it may cause your phone to malfunction. In addition, your
phone will no longer be covered by the warranty.
WARNING
To protect your phone and personal data, only download applications
from trusted sources, such as Play Store. If there are improperly installed
applications on your phone, the phone may not work normally or a
serious error may occur. You must uninstall those applications and all
associated data and settings from the phone.
4. Using a screen lock
Set a screen lock to secure your phone and prevent unauthorized use. From the
Home screen, tap
> Apps tab (if necessary) > Settings > Lock screen
> Select screen lock > Knock Code, Face Unlock Pattern, PIN, or Password.
Some options will prompt you to create a Backup PIN as a safety measure in case
you forget your screen lock.
Caution: Create a Google account before setting a screen lock and
remember the Backup PIN you created when creating your screen lock.
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