Settings > Display and Backlight > Calibrating the Display

Calibrating the Display
If the display of the telephone is reacting imprecisely when touched, you have to calibrate it.
You can calibrate the display as follows:
Press the Menu key and open the menu settings > display > calibration.
A cross appears in the top left corner of the display.
A cross appears in the bottom right corner of the display.

COMfortel 1400 - Firmware V2.2 - COMfortel Set V3.16 - Advanced Information V07 02/2019