So the 6s ads claim 'same battery life' as 6. This is BS. The battery size is smaller in the 6s, and can only do same battery life as 6 due to software optimizations in iOS9. But an iPhone 6 on iOS9 has more than its 'advertised' battery life under iOS9, by an hour infact. SO.. 6S battery life under iOS9 is 1 hour less than 6 under iOS9. Can someone dispute this? 6S actually has worse battery life than 6, both running the same OS.