My wife and I both have iPhone 6S phones. Recently my battery usage has failed to take me through even half a day. I compared my battery usage to my wife's (she doesn't have the problem). My phone shows 47% "Home and Lock Screen" usage, by far more than the next most power-hungry app (Messages= 12%). My wife's phone shows only 4% for "Home and Lock Screen", but I can't figure out what on my phone is accounting for the vastly higher usage. Our Brightness and Auto-Lock settings seem the same. What else can account for this?