Problem:
Customer complains about accidental key presses during the call.
Solutions:
1.Touch screen functions or proximity sensing may be affected by
humidity, rain drops, make-up, or dirt on the display. If your phone
touch screen becomes unresponsive, use a cleaning cloth to wipe the
touch screen clean. To avoid scratches on display do not use anything
that could scratch the display and do not use chemicals for cleaning.
2. Check that latest Phone SW is in use. That has the best proximity
sensing parameters.
Problem:
Customer uses display protective foil.
Solution:
Advice the customer that protective foils may affect the functionality of
the touch screen.
Touch screen functions or proximity sensing may be affected by
humidity, rain drops, make-up, or dirt on the display. If your phone
touch screen becomes unresponsive, use a cleaning cloth to wipe the
touch screen clean. To avoid scratches on display do not use anything
that could scratch the display and do not use chemicals for cleaning.
Troubleshooting on general touch related problems.
NOTE! Customer problems above do not require change of the display module.
Changing the display module does not correct the situation. Updating the SW is the
right procedure as the latest SW has the best proximity sensing parameters.
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