My Apple iPhone 6s seems to have less battery life than I expect, and I can’t figure out what app or apps are the culprit. Is there some way to know which iOS apps are the biggest battery hogs?
That’s a great question because you’re bringing up an issue that most people ignore when they calculate battery life or complain about how short the battery life is on their device: What apps you run will dramatically affect how long the device lasts between charges. Why? Because there are some apps that are greedy consumers, whether of CPU or of the network bandwidth and connection. Add always-connected “lower power” bluetooth and you’ve got a recipe for a disaster!
Okay, maybe not a disaster, but definitely a frustrating experience with charging and phone usage. It’s kind of like cars and how they get better gas mileage on long, consistent highway drives than stopping and starting in city driving: usage matters!
Certainly one standard trick for maximizing battery life on your smartphone, whether an Android phone or iPhone, is to lower the screen brightness and turn off bluetooth when you aren’t using it. Many people never use bluetooth at all and for them disabling bluetooth entirely can be a simple way to gain measurable improvement in charge duration!
Apple knows that app power consumption is a big deal and there’s actually a spot on your iPhone system where you can see which apps are consuming the most power too. Let’s have a look!
Start by launching “Settings“:
That’s not what you want, though, so swipe upwards to move to the lower entries.
Eventually you’ll find this block of options:
See the green icon and the label “Battery“? That’s what you want. Tap on “Battery” to proceed.
You can read about Low Power Mode and display Battery Percentage (I do!) if you want, but look more closely at the last line on the display above: “Battery Usage” followed by a spinning circle icon.
That’s what you want to wait for. It takes 10 seconds or longer to show its results, but iOS is actually analyzing your app battery usage and figuring out which apps are using the most battery power. So give it a minute!
After a bit you’ll get this excellent display:
Notice that there are two ways you can look at the data: Last 24 Hours or Last 7 Days. Each will show different results based on your actual usage and both are worth examining.
Home & Lock Screen consume almost 25% of my overall battery power, which seems high, except I listen to a lot of music off my iPhone and will view the current track and jump to the next track all without ever unlocking the phone. I’m sure that’s what’s causing this substantial usage. That also explains why Music and Spotify are also top of the charts. Indeed, subtract my music usage and I bet my phone would last a lot longer each day on its morning charge!
In any case, examine this list yourself and decide for yourself whether the battery usage for each app justifies it continuing to run on your precious iPhone. If not, restart your phone without starting that app or just axe it entirely!