Monitor Battery Usage for Apps

Battery TipsBattery life has always been a concern for smartphone users. While the iPhone provides a decent battery life, users typically try to optimize their setting to get the most out of each charge.

With iOS 8, Apple has added a setting to monitor battery usage for each app. This is helpful to see which apps you use the most and help isolate any apps that might be using an excessive amount of battery power.


Typical Battery Saving Tips

To preserve battery life on the iPhone, the following suggestions are generally recommended.  Depending on how you normally use your iPhone, you may opt not to use some of the suggestions.

  1. Go to Settings -> General -> Background App Refresh and turn off the Background App Refresh slider.  This will stop the iPhone from updating any apps that remain open in memory after you have closed the app.
  2. Go to Settings -> Brightness and turn down the screen brightness.  The brighter the screen, the more power is used.
  3. Go to Settings -> Privacy and turn off Location Services.  When apps use the GPS to locate your position, it contributes slightly to battery drain.
  4. Go to Settings -> iTunes & App Store and turn off Automatic Downloads and App Updates.
  5. Activate Airplane Mode if you are in an area without cellular service so your iPhone does not keep searching for a signal.


These suggestions may not make a major difference in battery life, but they will make some minor improvement. When most smartphones are used a lot and the screen has been illuminated for long periods of time, it is not unusual to recharge them daily.


Monitor Battery Usage For Each App

In iOS 8, Apple introduced a new feature in the Settings app to help monitor which apps are consuming battery life.  To see the battery usage, go to Settings -> General -> Usage -> Battery Usage.

Battery Usage



You will see a list of apps that recently used battery power along with the portion of battery power used by each app. This is helpful to understand what apps you use the most and to check if there are any apps unexpectedly draining your battery.

Battery Usage by App



When viewing the battery usage, the percentage shown is an indication of the amount of battery power that was used since the device was fully charged. For example, if your iPhone is showing 80% battery, that means 20% of the battery has been used. The percentage shown for each app is the portion of that 20% used by the app. If the Mail app is showing 50%, this means half of the overall battery usage (10% in this example) was from the Mail app.


Monitoring battery usage is not something you need to do everyday. If you think your battery is draining faster than usual, you can refer to the battery usage to see if there are any unexpected apps draining the battery.



Display Battery Percentage

Having the battery percentage next to the battery icon in the top right corner of the screen provides a more accurate indication of battery life compared to just viewing the battery symbol.

Battery Percentage



If your iPhone does not display the battery percentage, you can enable it by going to Settings -> General -> Usage and turning on the slider for Battery Percentage.

Battery Percentage Slider