HTC Rezound - Turning Airplane Mode on or off

Voice Privacy Encrypts outgoing voice calls and uses secure
channels when available.
NBPCD Set the calling parameters for the current country,
such as country code and IDD prefix.
Accounts Add, modify, or remove Internet calling accounts. You
can also choose whether to receive incoming Internet
calls.
Use Internet
calling
Select whether to use Internet calling for all calls you
make or for Internet address calls only, or to be asked
which you prefer for each call you make.
Turning Airplane mode on or off
In many countries, you are required by law to turn off wireless devices
while on board an aircraft. A way to turn off wireless functions quickly is to
switch HTC Rezound with Beats Audio to Airplane mode.
When you enable Airplane mode, all wireless radios on HTC Rezound with
Beats Audio are turned off, including the call function, data services,
Bluetooth, and Wi-Fi. When you disable Airplane mode, the call function is
turned back on and the previous state of Bluetooth and Wi-Fi is restored.
To turn Airplane mode on or off, press and hold POWER/LOCK, and then
tap Airplane mode.
When enabled, the Airplane mode icon
is displayed in the status bar.
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