Power button ends call: When enabled, you can press the Power Key to end
phone calls without turning the screen off.
Speak passwords: Check this checkbox to enable the speak passwords function.
Accessibility shortcut:
Enable this option to get spoken feedback when you
tapping the screen or pressing the key.
Text-to-speech output: Change settings for text to speech and adjust the rate
at which your phone speaks, to help blind and low-vision users.
Touch & hold delay: Select the time delay for the phone to distinguish finger
tap and hold gestures.
Color inversion: Tap to turn on or off color inversion.
Color correction: Tap to turn on or off color correction.
Printing
You can manage Google Cloud Print service or other printer plug-ins installed
from the Google Play Store or your printer manufacturer.
Developer Options
Developer options contains settings that are useful when developing Android
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Phone Settings