Phone randomly shut down

[seanwplandry]

Ok so I just had my phone randomly shut down on me for no reason. Battery is at 80% and was working fine. I playing a game on my phone, once I stopped I locked the screen and put it in my pocket. When I went to use it a few minutes later it would not respond. I plugged it in and still nothing, once I pressed the lock screen and volume buttons to restart it, it came on right away and is working fine now. Anyone else have this kind of issue?

 

[Rukbat]

Check the battery screen. Tap the graph at the top and look at the next graph. Look for a sudden drop to zero. If you see it, you need a new battery. (It's the sign of a dendrite, and can't be fixed - see Lithium Battery Dendrite links if you want to learn more.)