This Is Why Your Phone Shuts Down At 5% Battery Life
The short answer: Your smartphone is doing you a favor and saving all your stuff.By Leah Becerra | August 12, 2015
If you've ever wondered why your cellphone dies before its battery gets all the way down to 0 percent, the short answer is: The phone is doing you a favor.
The long answer is your phone is doing a lot of things all day — like looking for cell towers, checking for emails, pushing alerts from all your favorite apps — that you're probably not aware of.
If you've ever had to do the whole force-restart thing — say, you were having trouble with an app — the sudden shutdown means those processes are stopped dead in their tracks, making your phone forget whatever job it was doing.