This has been slowly driving me insane since I got my S4. I charge my phone overnight on my nightstand. When it is fully charged, the screen turns on and stays on, bathing the room with enough light to summon Batman. I finally found a solution buried in an Android forum.

First, find the Developer options in your settings.

If you do not have Developer options, tap on “About Phone”.

To enable developer mode, tap on the Build number 7 times. Seriously, you have to tap on it 7 times. You’ll get a message that tells you that you are now a developer.

Now go into the Developer options screen and uncheck “Stay awake”.  With this setting unchecked, the phone won’t wake up and neither will you.