Note: The following information applies to the devices IS330.x, IS530.x, IS540.x and IS930.x

You can assign a function to the optional keys via the "Buttons" menu:

	Open <Settings>
	Select <Buttons>

Buttons

Each key has an option for short and long press as well as the option to wake up the device:

Wake device enabled: The device wakes up when this key is pressed

Wake device disabled: The device must be woken up before you can use the key for an action

Short press action: Here you can assign a function to the key when it is pressed briefly

Long press action: Here you can assign a function to the key with a long press on the key

	Select <Short press action> or <Long press action>
	Select a function

SOS and PTT (Push to Talk) are i.safe Mobile proprietary intents and may not be usable with every app. Developers can use the following intents for their application:

SOS

PTT (Push to Talk)

Rotary Knob