HTC One A9‎

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Checking battery usage

See how the system and apps are using the battery and how much power is being used.
  1. From the Home screen, tap > Settings > Power.
  2. Tap Battery usage, and then tap an item to check how it's using the battery.
  3. If you see the Adjust power use section while viewing battery use details, you can tap the option underneath it to adjust settings that affect battery usage.
Another way to check the battery usage per app is to go to Settings > Apps. Tap the app you want to check, and then tap Battery.
Note: If the Battery option on the App info screen is grayed out, it means the app is currently not using the battery.
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