Battery Drain
The battery drain in my Iphone 6s is absolutely erratic. Sometimes the battery goes from 100% to 30% with no use of the device. When it reaches few percents and I shut it down and restart is shows 30%.
Sometimes the use of Google Chrome drain the battery fast, sometime slowly.
I almost gave up, if the new Iphones behave the same way, I might consider change from Apple to other phones.
It's time for Apple to fix the problem or at least to admit that there is a problem and to commit to fix it as soon as possible.
iPhone 6s