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How to Fix Bad iOS 15 Battery Life



If you’re noticing excessive battery drain after installing the latest version of iOS 15 on your iPhone, there are some steps you should take before downgrading your iPhone’s software or getting in contact with Apple customer service.

As we push away from Apple’s latest iOS 15 release, iPhone users are reporting a variety of iOS 15-related problems. One issue on the list is abnormal battery drain, a common issue that pops up every time the company pushes new software to the iPhone.

Some of these battery issues may hardware-related, but many others are likely related to Apple’s latest iOS 15 software update. In many cases, it may be an app causing the issue.

If you’re experiencing abysmal battery life after moving to iOS 15, you might be thinking about a move back to older iOS 15 software.

That’s certainly an option if the downgrade is available, but you should try and fix the issue so you can stay put on the current version of iOS 15.

Fixing iOS 15 battery life problems can be tricky, but we’ve got some solutions that have worked for us, and many other iPhone users, in the past.

Restart Your Phone

If you start noticing abnormal drain after installing iOS 15, we recommend restarting your phone before doing anything else.

Power your iPhone down, wait for a minute, and then power it back on. A quick reboot can have a tremendous impact on your device’s performance so this is the first thing to try.

Update Your iPhone

Apple will periodically release new iOS software. Point updates (x.x.x) are typically focused on fixing bugs while milestone upgrades (x.x) usually deliver a mix of features and fixes.

The company might not call out battery life fixes in an iOS update’s change log, but new software always has the potential to help cure your device’s ailments.

If a new software update is available, dig into feedback about its performance and then decide if it’s worth installing. For more on the latest version of iOS 15, check out our guide.

Check Your Apps

Applications, particularly third-party apps, have a tendency to start acting up after Apple releases new iOS software. So, there’s a good chance one, or more, of your apps is the source of your battery life problems.

Checking app performance is fairly straightforward on iOS 15 and it might only take you a few minutes to find the app, or apps, causing trouble. Here’s what you need to do:

  • Go to the Settings app.
  • Select Battery.
  • Head into the Battery Usage tool. This tool will show you the apps draining your battery and when they’re doing so.

If you use an app on your phone a lot, it will obviously drain more battery than an app you never use. So if you see something out of the ordinary, an app you rarely use draining battery for instance, you’ll want to investigate further.

If you see one or more of your applications eating up an abnormal amount of battery, try deleting the app from your device and see if that improves your iPhone’s performance.

If the app is an essential one, we recommend downloading the latest updates. If that doesn’t help, and you really need to the app to get through your day, you might need to downgrade back to an older version of iOS if the option is available.

Reset All Settings

If you determine your apps aren’t the source of your battery issues, you should now try resetting your iPhone’s settings.

Before you do this, note that it will cause your iPhone to forget known Wi-Fi networks (and Bluetooth connections) so make sure you write down your passwords if you need to before you tap reset.

Here’s how to reset all of your iPhone’s settings:

  • Go to Settings.
  • Go to General.
  • Scroll and tap Transfer or Reset iPhone.
  • Tap Reset.
  • Tap Reset All Settings and enter your passcode if one is enabled.

Once the process is complete, you’ll need to reconnect to your Wi-Fi and Bluetooth devices.


If you can’t find a fix for your problem and/or don’t want to wait for Apple’s next iOS update, you can try downgrading back to an older version of iOS.

Your downgrade options will change over time and downgrading may not be available as Apple stops signing on older iOS software.

For more on the iOS downgrade, take a look at our walkthrough.

Buy a Battery Case or Battery Bank

If you can’t seem to shake your battery life issues and you don’t want to take your phone in and/or replace your device, buying a battery case or battery bank could help.

We generally recommend going with a Mophie battery case, but Apple’s official battery cases are a great alternative if you’d prefer a first-party accessory.

If you don’t want to put a bulky case on your iPhone, you might want to buy a battery bank.

Battery banks are small, portable power sources that can fully charge your iPhone multiple times. There are a ton of great options out there, but Mophie’s powerstation and the Anker Powercore 20 are a couple favorites.

4 Reasons Not to Install iOS 15.7 & 11 Reasons You Should

Install iOS 15.7 for Better Security

Install iOS 15.7 for Better Security

If security is important to you, you'll want to think about installing Apple's iOS 15.7 update right away.

iOS 15.7 brings 11 security patches along with it. If you want to take a look at the details, head over to Apple's security site for more.

If you missed iOS 15.6.1, it had two security patches on board which are essential if you want to keep your device and its data safe from harm. You can read more about the pair on Apple's website.

If you missed Apple's iOS 15.6 update, it had 30+ security upgrades on board. You can learn more about them right here.

If you missed iOS 15.5 it brought 27 new security patches to the iPhone. You can learn more about these patches over on Apple's security site.

If you missed iOS 15.4.1, it had one new security patch on board. You can read more about it over on Apple's website

If you missed the iOS 15.4 update, it had a whopping 36 new security patches on board. If you want to learn more about these patches, head on over to Apple's security site for the particulars

If you missed iOS 15.3.1, it had one security patch on board. For more about it, head over to Apple's security page

If you missed iOS 15.3, you'll also get its patches with your upgrade. iOS 15.3 brought 10 new security patches to iPhone users. If you're interested in the details, you can read more about them right here.

If you missed iOS 15.2.1, you'll get its security patch with your upgrade. You can learn more about the change over on Apple's website

If you missed Apple's iOS 15.2 update, you'll get its 30+ security patches with your upgrade. You can read all about them over on the company's security site

iOS 15.2 also included some important upgrades to privacy. The software brought the company's App Privacy Report to Settings. This lets you see how often your apps have accessed your location, photos, camera, microphone, contacts and more during the last seven days. You can also see their network activity. 

In addition, iOS 15.2 brought Apple's communication safety features for kids. You'll find these features in the Messages app, in Siri, in Spotlight, and in Search. 

If you missed iOS 15.1, iOS 15.7 will bring its security patches to your iPhone. You can read more about them on Apple's website

If you missed iOS 15.0.2 you'll also get its security patch with your upgrade. You can learn more about it right here.

iOS 15.0 also brought numerous security patches to your iPhone. If you'll be moving up from iOS 14 and you're interested in the exact nature of these improvements, you can read about them over on Apple's security website.

Apple's updated its website with new information about iOS 15's batch of security patches. The company now says the software patched up an issue that could have exposed a user's private Apple ID information and in-app search history. It also says iOS 15 patched up an issue that allowed apps to override Privacy preferences.

If you skipped iOS 14.8 or any older versions of iOS, you'll get the security patches from those updates with your iOS 15.7 update as well. 

In addition to those patches, iOS 15 comes with some security and privacy upgrades including improvements to Siri. Requests made to Siri are now processed on the device itself using Neural Engine. This makes it more secure. 

If you're an Apple Card user, you'll now get a security code that changes regularly to use when you make online transactions. 

Apple's also included a built-in authenticator that's similar to Google Authenticator. This will let you generate verification codes for enhanced sign-in security under your Passwords.

There's also a Mail feature that hides your IP address. 

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