The iPhone 6s and 6s Plus were designed to offer up to 14 and 24 hours of usage, thanks to iOS 9 handling power consumption in an intelligent way. And if it doesn't, it means you might have your settings all jacked up.
Since the inception of iOS 9, there are several new features that are switched on by default, and thus settings you can tweak to make your new iPhone go all day. By the time you've made your way to the end of this article, you'll be surprised at how long the battery can actually last.
You know what they say, every little bit goes a long way.
Not using Low Power Mode
Low Power Mode is the most miraculous part of iOS 9 for people who want to stretch the battery life of their iPhones out. A pre-iOS 9 life means you could only pathetically watch as the 20% low battery warning flash up on your iPhone and seemingly go all the way down to nada.
Do this instead: When your iPhone’s battery levels dip dangerously low (20% emergency bells), it will automatically prompt you to activate Low Power Mode. Do it and your battery will change from red to yellow. You don't even need to wait till you're down to 20%; should you expect a long day ahead, you can activate it at any point without crippling your phone. Just go to Settings, Battery, and tap that Low Power Mode. You’ll be surprised at how long your iPhone can last in this power mode
Not staying in Low Power Mode
Having said that, Low Power Mode is at your disposal 24/7. But when you start charging your phone when it's in Low Power Mode, it will automatically turn it off when battery is charged to 80%. You don't have to let your iPhone call the shots, stay in Low Power Mode for as long as you like.
Do this instead: When that Low Power Mode Turned Off notification shows up on your lockscreen, just swipe to the left to hit Enable Again. So you don't have to remember to enable Low Power Mode later.
Oversharing your every move
iOS 9 brings with it the ability to share your location with your friend via Messages via the little Details tab. It’s a pretty neat feature, but you don’t really need it switched on the whole day, and have your friend tracking your every move right?
Do this instead: Go to Settings, Privacy, Location Services, and Share Location From to disable it. Or choose to share your location from another device which has better battery life, like your iPad for instance.
Being all hands on with Handoff
This new iOS 9 and OS X El Capitan feature presents a world of convenience by allowing you to move seamlessly from iThing to iThing while you’re doing work. But if you only have an iPhone, it’s not exactly a feature you can make the most of, right?
Do this instead: Hit up Settings, click on Handoff & Suggested Apps and turn off Handoff. Enable it when you have more battery, get more than one iThing, or actually require the function.