Does displex work on touchscreen phones if not why?

Answer 1

It may work on resistive touchscreens but most likely not on capacitive touchscreens.

The reason for this is that a capacitive touchscreen works because of an exterior capacitive layer (typically indium tin oxide), that conducts a continuous electrical current across the sensor.

The abrasive nature of displex may remove areas of this coating, rendering the touch facility inoperable.

With resistive screens, the contact layers are usually located beneath a protective outer surface.

In this scenario, only the outer surface should be abraded, preserving the functionality of the touch-sensitive functions.

For common practical examples of implementation, the iPhone uses capacitive technology (hence its ability to support multi-touch), whilst phones like the Samsung Omnia tend to use resistive.