How to do GPS device Screen Calibration ?

To Complete a Touchscreen Recalibration:

  1. Power the device on.
  2. Touch Settings (wrench icon)
  3. Touch Display.
  4. Touch Recalibrate.
  5. A new screen will display that says Press Dot.
  6. Accurately touch the dots as they appear. …
  7. When Calibration Complete appears on the screen, touch OK.