Settings
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The power key ends calls
: Set to end a call when you press
the Power key.
Accessibility shortcut
: Add a shortcut to accessibility
settings that appears when you press and hold the Power
key.
Screen timeout
: Select the length of time that the device
waits before turning off the display backlight.
TalkBack
: Activate TalkBack, which provides voice
feedback.
Install web scripts
: Set applications to install web scripts to
make their web content more accessible.
Font size
: Change the font size in the calendar, email,
phonebook, and memo applications.
Mono audio
: Enable mono sound when you listen to audio
with one earbud.
Tap and hold delay
: Set the recognition time for tapping
and holding the screen.

Developer options

Change the settings for application development.
USB debugging
: Activate USB debugging mode to
connect your device to a computer with a USB cable.
Development device ID
: View your devices development
ID.
Allow mock locations
: Allow mock locations and service
information to be sent to a Location Manager service for
testing.
Desktop backup password
: Set a password to secure your
backup data.
Strict mode
: Set the device to flash the screen when
applications perform long operations.