Depends on how much work I have to do on a specific day. If I have a lot to do I might not go to sleep until 03:00am. As my life is right now that is basically the time I go to sleep every night.
I can't renember. Last night, I was in bed on my phone and I was really sleepy and I fell asleep, my charging was full and I woke up this morning and my charging was empty as I had the internet and screen on all night.