To enable touch tones

1From your Home screen, tap .

2Find and tap Settings > Sound.

3Mark the Dial pad touch tones and Touch sounds checkboxes.

To select a notification ringtone

1From your Home screen, tap .

2Find and tap Settings > Sound > Default notification.

3Select a ringtone.

4Tap Done.

Screen settings

To adjust the screen brightness

1From your Home screen, tap .

2Find and tap Settings > Display > Brightness.

3Drag the slider to adjust the brightness.

4Tap OK.

The brightness level affects your battery performance. For tips on how to improve battery performance, see Improving battery performance on page 14.

To set the screen to vibrate

1From your Home screen, tap .

2Find and tap Settings > Sound.

3Mark the Vibrate on touch checkbox. The screen now vibrates when you tap soft keys and certain applications.

To adjust the idle time before the screen turns off

1From your Home screen, tap .

2Find and tap Settings > Display > Sleep.

3Select an option.

To turn off the screen quickly, briefly press the power key .

To keep the screen active while the phone is charging

1From the Home screen, tap .

2Find and tap Settings > Developer options.

3Mark the Stay awake checkbox.

Phone language

You can select a language to use in your phone.

To change the phone language

1From the Home screen, tap .

2Find and tap Settings > Language & input > Language.

3Select an option.

4Tap Done.

If you select the wrong language and cannot read the menu texts, find and tap . Then select the text beside , and select the first entry in the following menu. You can then select the language you want.

Airplane mode

In Airplane mode, your phone's network and radio transceivers are turned off to prevent disturbance to sensitive equipment. However, you can still play games, listen to music, watch videos and other content, as long as all this content is saved on your

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Sony LT30at manual Screen settings, Phone language, Airplane mode