150 Chapter 10 : Preferences
1Open Device Info .
2Open the application menu and tap Certificate Manager.
3Tap the certificate and tap Delete Certificate.
Region al Settings

Language

You can set your phone display to any language available for the device.
1Open Regiona l Settings .
2Tap th e l an gu ag e.
3If a region list is displayed, tap the region.
4Confirm you want to use the new language, or revert to the original
language.
Your phone resets after you select a new language. You do not lose any data
or applications from the reset.

Forma ts

You can set your phone to format numbers, currency, date, and time to
reflect your country’s style.
1Open Regiona l Settings .
2Tap th e c ou nt ry n am e.
3 Do one of the following:
•Type the name of the country, and when it appears, tap it.
•Scroll down to find a country, and then tap it.
4Confirm you want to change the format, or tap Cancel.
Your phone restarts after you select a new country format. You do not
lose any data.
Screen & Lock

Change screen brightness

1Open Screen & Lock .
2Under Screen, tap, hold, and drag the Brightness slider to the
preferred level.

Set the interval for turning the screen off automatically

By default, your screen turns off after one minute of inactivity to save battery
power. You can change this interval.
1Open Screen & Lock .
2In Tur n O ff A ft er , tap the interval shown, then tap the number of
seconds or minutes.

Change your wallpaper

Your wallpaper is the screen background in Card view. You can customize
the wallpaper to show a favorite picture.
1Open Screen & Lock .
2Tap Change Wallpaper.