█Modify PIN (Personal Identification Number)
Your ClearSounds® A1600 is equipped with a PIN, which is used when
1.Press under the word Menu on the screen to display the main menu list.
2. Press up or down 
to scroll to BS Settings and then press under the word Select.
3.Press up or down
to scroll to Modify PIN and then press under the word Select.
4.The display shows “PIN ?”. Enter the current PIN, then press under the word Select. If the old PIN is validated, you will be prompted to enter a new PIN. If the old PIN is not validated, a warning beep will sound and you will be returned to the Modify PIN menu.
5.Enter the new PIN and then press 
under the word Select. You will be asked to confirm the PIN. Enter the new PIN again and then press 
under the word Select.
LCD DISPLAY
Reminder: Press 
under the word Back on the screen from any menu to return to the previous screen. To return to the main screen, press
. Otherwise, after 30 seconds, the phone will automatically return to the main screen from any menu if no key is pressed.
█LCD Settings
Contrast Settings
1.Press under the word Menu on the screen to display the main menu list.
2.Press up 
or down 
to scroll to HS Settings and then press under the word Select.
3.Press up 
or down 
to scroll to LCD Contrast and then press
under the word Select.