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Chapter 1 Page 19
Turning your Treo on and off
Your Treo communicator has two operating modes: a handheld mode and a wireless mode. You
can turn the handheld mode and the wireless mode on and off independent of each other. When
you turn on the handheld mode, you can use organizer applications such as Date Book Plus and
To Do List. When you turn on the wireless mode, you can make or receive calls. You can also turn
both modes on at the same time. When both the handheld and wireless modes are on, you can
use the organizer applications as well as send and receive calls.
For example, when you are on an airplane, you need to turn wireless mode off to comply with FAA
regulations, but you can still use handheld mode to access Date Book Plus and other organizer
applications.
To turn handheld mode on and off, do any of the following:
■ Open the lid to turn it on, or close the lid to turn it off.
■ Press the power button.
■ Press and release the rocker switch.
■ Press any application button on the front of your communicator.
To turn wireless mode on and off:
■ Press and hold the power button until you hear the confirmation tones to turn wireless mode
on and off. The ascending tone indicates wireless mode is now on and the descending tone
indicates wireless mode is now off.
Using the keyboard backlight
If you have difficulty seeing your communicator keyboard in dark environments, you can use the
backlight to illuminate the keyboard.
Note: When you turn on the keyboard backlight, the screen brightness automatically dims to
conserve battery power. If you have difficulty seeing the screen in well-lit environments,
be sure the keyboard backlight is off and adjust the display settings. See page 14 for
details.
To turn the keyboard backlight on and off:
■ Press the power button twice in quick succession.
Backlight tips:
■ The backlight dims when a call is in progress and you do not press any buttons or tap your
communicator screen for more than 30 seconds.
■ The backlight also turns off automatically (after a period of inactivity) with the Auto-off
feature. See page 182 for details.