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Owner's of the Garmin Telephone DIALOG gave it a score of 0 out of 5. Here's how the scores stacked up:
  • Reliability

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Settings
BusinessPhone – Dialog 4223 Professional / Dialog 3213110
Display contrast
You can adjust the contrast for the display.
í*5 Press and hold simultaneously until a ring signal is heard.
The display shows:
2nd
Ô Press.
The display shows:
ì Press repeatedly to adjust the contrast.
# Press to save and exit.
Note: To exit the menu without saving the changes, press
# before you press any of the adjustment keys.
Setting Mode
Setting Mode
Display Contrast