When my Fairfone 3 phone is held vertically in a car support, the touchscreen becomes insensitive (not responding) to the finger’s touch. (The main side button is always responsive. But the touch screen sometime is responsive for a few seconds, and then becomes non-responsive to touch again for a few more seconds).
(This is not a problem making calls, as I can use the car’s bluetooth interface, but is very annoying when attempting to use other phone apps in car, such as maps).
When the phone is lying down (horizontally) on a table, the problem also occurs, but much less frequently.
When the phone is held in hand, the problem almost never occurs. (I have no complaints at all when operating the phone held in hand).
The phone has a protective Case Black, and a screen Protector with Blue Light Filter (both bought here on the site).
I already did the dial
*#*#66#*#* Service tests > Test Single > Touch screen, and found no problems (all areas of the thouchscreen are responsive) - but I only did the test held in hand or with the phone lying on a table).
Is this a defect of the phone ? A defect of the screen protector ? Is there any workaround ?
( Seems a similar problem to FP3 Touchscreen-Sensitivity )