HTC 99HLR002-00 manual Turning Airplane mode on or off

	Phone calls 35
Voicemail settings	Specify another voicemail number aside from the voice
	mail number on your SIM card.
Clear voicemail notification	If you have a notification of a new voicemail, you can
	clear the notification with this option.
Hearing aids	Select to enable HAC (Hearing Aid Compatible)
Phone settings	Edit the call reject message, choose whether to open
	the message editor when you reject a call with a
	message, and choose whether to allow automatic
	saving of an unknown contact number when a call with
	that number ends.
Cell broadcast	Enable or disable receipt of cell broadcast messages
	from your service provider.
Cell broadcast settings	Configure channels and language for cell broadcast
	messages.
Call forwarding	Select how you want your phone to handle busy,
	unanswered, and unreachable calls. You can also set the
	call forwarding option for all incoming calls.
Additional settings	Enable or disable operator services such as caller ID and
	call waiting.

Turning Airplane mode on or off

In many countries, you are required by law to turn off the phone while on board an aircraft. A way to turn off the phone function is to switch your phone to Airplane mode. When you enable Airplane mode, all wireless radios on your phone are turned off, including the call function, data services, Bluetooth, and Wi-Fi.

To turn Airplane mode on or off, you can:

Press and hold POWER, and then tap Airplane mode.

From the Home screen, press MENU. Tap Settings > Wireless & networks, and then select or clear the Airplane mode check box.

When enabled, the Airplane mode icon ( ) is displayed in the status bar.

When you disable Airplane mode, the call function is turned back on and the previous state of Bluetooth and Wi-Fi is restored.