Battery drain & phone shutting down.
When my phone warns me it's got less than 20% charge left it randomly decides to switch off. I've turned off app refresh, location settings and only have my screen about 25% bright. My battery drains so quickly. Anyone else's the same? If I've got 20% charge left and use my camera it also ***** itself down even when battery isn't fully drained. Weird.
iPhone 5, iOS 7.0.4