You can configure Android
to keep the screen of your device awake while it is charging. This option can be enabled/disabled under the Developer Options
The first step is to enable the Developer Mode
. Go to Apps
> About Phone
and then continuously tap on the Build number
until a message that reads, "You are now a developer"
is displayed on your screen.
Head back to the Settings
menu > General
> Developer options
. Tick the Stay awake - Screen will never sleep while charging