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12 Ways to Fix iOS 15.2.1 Battery Draining Problem on iPhone

iOS 15.2.1 is the latest major release after the launch of iOS 15 by Apple for its eligible iPhone models that’s a major successor of iOS 14. Although it packs plenty of new features, significant visual changes, etc, several users have reported about the iOS 15.2.1 Battery Draining Problem on iPhone. If you’re one of them, don’t worry.

iOS 15.2.1 users are facing multiple issues like notifications not coming, verification failed for software update, app force closes, unlocking iPhone with Apple Watch, Wi-Fi issues, unresponsive touchscreen, etc. So, we can consider that most of the common issues or bugs might gonna be fixed completely. It seems that battery draining is one of the consistent performers on iOS for years. Luckily, there are several workarounds mentioned below.

12 Ways to Fix iOS 15.2.1 Battery Draining Problem on iPhone

If you’re using the iPhone 6s/7/8 series or iPhone X/11/12/13 series model and just upgraded to the new iOS 15.2.1 then you can check out this full troubleshooting guide to resolve it.

12 Ways to Fix iOS 15 Battery Draining Problem on iPhone

1. Check Battery Health & Suggestions

It can be possible that your iPhone battery health is going down or your battery is damaged and can’t hold up the charge properly. Therefore, you need to change the battery as soon as possible to protect your device.

  • Just go to the iPhone Settings >> Tap on Battery >> Tap on Battery Health.
  • Here you will see the battery health status and the system will suggest some options to improve the battery backup as well.

2. Turn Down the Brightness Level (Enable Auto-Brightness)

  • Just open the Control Center on your iPhone by swiping down from the upper-right side.
  • Now, drag the brightness level slider to a minimum.
  • Additionally, you can go to the device Settings.
  • Select General >> Accessibility >> Display & Text Size.
  • Here turn on the Auto-Brightness toggle.

3. Disable Raise to Wake option

  • Open the Settings app >> Scroll down and select Display & Brightness.
  • Turn off the Raise to Wake toggle.
  • Now, whenever you pick your iPhone, the system won’t turn on the lock screen display automatically. This will save a lot of battery juice.

4. Enable Auto-Lock to Minimum (30 Seconds)

  • Head over to the iPhone Settings >> Display & Brightness >> Tap on Auto-Lock.
  • Set it to a minimum of 30 seconds or a maximum of 1 minute.
  • This will also reduce the screen on time and your device battery level will be saved automatically.

5. Check All Pending App Updates

  • Go to the App Store >> Tap on the Account/Profile icon on the top right corner.
  • Tap on Update All option >> Select Done.
  • Now, wait for all the apps to update.
  • Once done, restart your iPhone and check the battery juice after using it for a while.

6. Remove Unnecessary Screen Widgets

The quick view or quickly accessible screen widgets always try to update the information or details in the background. And obviously, this will help us to easily check what’s the battery level or what’s the weather or other message notification, quick reply, news, reminders, etc. So, it takes a lot of battery juice by running in the background all the time.

  • Swipe to the most left screen on your home screen. (Widget & Shortcut area)
  • Scroll to the bottom and tap on Edit.
  • In order to remove widgets, tap on the red circle icon next to the widgets >> Tap on Remove.
  • Finally, tap on the Done button.

7. Reboot your iPhone

To reboot your latest generation iPhones (without the Touch ID button), check the steps below.

  • Press and hold the Side/Power button + Volume Up/Down button for a few seconds.
  • Next, the Slide to Power Off bar will appear.
  • Drag the slider to switch off your device.
  • Now, long-press the Power/Side button for a couple of seconds.
  • Release the button when the Apple logo will appear.
  • Your iPhone will reboot.

To reboot the Touch ID included iPhones (iPhone 8 or earlier or iPod Touch), check the steps below.

  • Long-press the Top or Side/Power button until the Slide to Power Off bar will appear on the screen.
  • Drag the slider to power off the iPhone.
  • Wait around 10 seconds and then press & hold the Top or Side/Power button until the Apple logo appears.
  • Now, release the button and wait for the device to boot.

8. Turn Off Background App Refresh

  • Open the Settings app on your iPhone.
  • Tap on General >> Select the Background App Refresh.
  • Tap on Background App Refresh again and select Off.
  • This option will prevent most of the apps to refresh data in the background and it will save battery juice as well.

9. Turn Off System Services (Networking & Wireless)

  • Head over to the device Settings >> Tap on Privacy.
  • Go to Location Services >> Scroll down to the bottom > Tap on System Services.
  • Here you will get a bunch of system services that are already enabled by default.
  • You can check and turn off some of the unnecessary services especially the Networking & Wireless toggle.
  • Once done, just follow the next method to turn off the location services as well.

10. Adjust iPhone Location Services

  • Go to the device Settings menu >> Scroll down and select Privacy.
  • Tap on Location Services and you can individually select which apps are useful can track the location all the time.
  • Then you can set the rest of the apps to While Using the App or Ask Next Time to save plenty of battery.
  • While there are plenty of apps available which you can easily set to Never under Allow Location Access option.

11. Try to Place iPhone Face Down

When you’re facing toward the iPhone screen, the Face ID always runs in the background and tries to scan the registered face. So, even if you’re in low lighting condition, the Face ID recognizes your face and opens the lock screen & unlocks it too. So, it’s better to place your iPhone face down for unintentional screen light up or unlock the screen.

12. Use Low Power Mode to Save Battery

If you’re low on battery charge and still have to spend a few hours with that low battery level, then you should enable the Low Power Mode to save the battery juice drastically. However, it will disable some of the services like push notifications, email fetching, Hey Siri, Background App Refresh, some visual effects, etc.

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  • Head over to the iPhone Settings >> Battery >> Turn on the Low Power Mode toggle.
  • The battery icon will turn from a green color to yellow color.
  • So, you can understand the Low Power Mode and even you can track the battery usage history.

Bonus Tip: 13. Enable Reduce Motion

  • Open the Settings app >> Tap on Accessibility >> Tap on Motion.
  • Turn on the Reduce Motion toggle.
  • Additionally, you can turn off the Auto-Play Message Effects and Auto-Play Video Previews.
  • These options will give better battery life on your iPhone and should fix iOS 15.2.1 Battery Draining.

That’s it, guys. We assume that this guide was helpful to you. Feel free to ask in the comments below.

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