Bullitt Group S31 User Manual

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 S31 Smartphone User Manual

7. Enable or disable the Use 24-hour format function to switch between 24-hour format and  

12-hour format.

Setting the display

Adjusting the screen brightness

1. On the Settings screen, touch Device > Display > Brightness level.

2. Drag the slider left to make the screen darker, or right to make it brighter.

3. Once you lift your finger off the slider, this will save your setting automatically.

Note:
Slide the Adaptive Brightness switch to the right (

) to enable the device to automatically adjust 

the brightness of the screen depending on the surrounding light.

Auto-rotate screen

Touch When device is rotated and set the setting to Rotate the contents of the screen to enable 
the display to rotate when you turn the phone between landscape and portrait.

Adjusting the time before the screen turns off

If your mobile phone is idle for a period of time, it will turn off the screen to save battery 
power. To set a longer or shorter idle time, do the following:

1. On the Settings screen, touch Device > Display > Sleep.

2. Select the duration you want the screen to be illuminated.

Using the glove mode

Enable the Glove Mode to make the touchscreen respond more accurately when you are 
wearing gloves.

1. On the Settings screen, touch Device > Display > Glove Mode.

2. Slide the Glove Mode switch to the right (

) to enable the function.

Setting phone ringtone

Turning on silent mode

1. Press and hold the Power key.

2. Touch 

 to enable the silent mode. Then all sounds except media and alarms are silenced.

Adjusting the ringtone volume

You can adjust the ringer volume when you are on the Home screen or any application screens 
(except during a call or when playing music or videos). Press the 

Volume up/down key to 

adjust the ringer volume to your desired level. You can also adjust the ringer volume on the 
settings screen.