I own the LG X charge. When I am on a call, whether I initiated the call or am being called, my screen will go black after a few seconds. How do I set it to stay lit when I am on a call? I have the screen time out set to 2 minutes but the screen goes out when on a call much faster.
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On p.16 of the manual:
"Proximity sensor: During a call, the proximity sensor turns off the screen and disables touch functionality when the device is in close proximity to the human body. It turns the screen back on and enables touch functionality when the device is outside a specific range".
"Screen-protective film or accessories may interfere with the proximity sensor."
I don't think there is a way to set it to stay lit. What you could do is to check if your screen-protective film (if you have applied it) gets in the way of proximity sensor.