HTC Thunderbolt User Manual page 116

116 Keyboard
Phone keypad & compact QWERTY
Word completion
Other settings
Sound feedback
Vibrate when typing
Finger touch precision
Calibration tool
Reset calibration
When using the Compact QWERTY or Phone keypad,
lets you select from a list of possible combinations
based on the characters that appear on the keys that
you tapped.
Select to hear a clicking sound whenever you tap a
key on the keyboard.
Select to enable vibration feedback whenever you
tap a key on the keyboard.
Tap to re-calibrate the keyboard touch accuracy. Re-
calibrate the keyboard if you feel that the keyboard
keys are not responding accurately to your taps.
Tap to reset the calibration back to factory default.