iPhone 6 went from 100 to 0% in under 3 hours
I was using an iPhone last one or two Sundays (probably April 14), and it went a problem. Today, it went from 10% to 50% in 2 hours, and on the 14th, it went from 100% to 0% in 2.5 hours, so it went from 40% to 0% in 1 second while changing the language. The average battery life is under 3 hours, and it ran iOS 9.x.x.
iPhone 6