How to make Android device boot when power is plugged in?

Question

I need to use this for a Samsung Tablet.

Usually if the device is switched-off and the USB cable is being connected the display will wake up for some seconds showing

Answer 1

I have a rooted Samsung S4 mini. The following steps worked for me:

1. mount -o remount,rw /system
2. mv /system/bin/lpm /system/bin/lpm.orig

3. create /system/bin/lpm as follows:

   #!/system/bin/sh
   /system/bin/lpm.orig &
   while [ true ]; do
     sleep 1
     ps | grep lpm.orig && sleep 3 && /system/bin/reboot
   done
   

4. chown root.shell /system/bin/lpm