Please god fix the 10.2.1 battery drain issue. Last night it was at 100%, no apps running and freshly restarted. Woke up with it 50%. Left my house and by the time i'd got to the station (5mins) was at 19%, by the time i'd walked onto the platform it was dead. Charged it upt when i got home to 100%, 45 mins later it's 5% and for some reaso not turned itself off yet. Battery Meter says nothing fancy, no app has used more than 10% in last 24 hours. I've basically dumped my 5S now and have switched to using my work Samsung S4 instead. If the issue is not fixed i'll ditch Apple when i get my new work Android phone and won't bother upgrading my own device. And i really dislike Android
That's how annoying this issue is.