T-Mobile REVVL 4 - Battery; 3 Personalize Your Phone; Language; Date & Time

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2.2 Battery
To optimize your battery life, you may do the following:
Turn on power saving mode
• Go to Settings > Battery > Battery saver
• Touch TURN ON NOW to activate the battery saving mode.
Lower screen brightness
• Go to Settings > Display > Brightness level
• Lower the brightness by sliding to the left.
Screen timeout
• Go to Settings > Display > Advanced > Screen timeout
• Select the screen timeout duration.
3
Personalize Your Phone................................
3.1 Language
Your device supports multiple languages. You can change your phone language by:
• Go to Settings > System > Languages & input > Languages.
• Touch + Add a language to select a language from the language list.
• Touch and hold next to your desired language and drag it to the top of the list.
3.2 Date & Time
Go to Settings > System > Date & time.
Use network-provided time
Turn on to enable the network-provided time.
Use network-provided time zone
Turn on to enable the network-provided time zone.
If Use network-provided time is turned off, you will have the following two options to manually set the date
and time:
• Setdate
Touch to open a dialog in which you can manually set the date.
• Settime
Touch to open a dialog in which you can manually set the time.