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Why Is My iPhone Battery Draining So Fast All Of A Sudden

Does your iPhone battery drain so fast all of a sudden than before? Do you now have to charge the iPhone multiple times a day? Well, after being in the repair center for many years, I have often encountered customers with such problems. Also, I found some practical ways to solve this issue from my research and experimentation. Read on as I answer these iPhone battery drain questions and many more.

Why is my iPhone battery draining so fast?

If you’re experiencing rapid battery drain, below are some likely reasons for that:

  1. Playing video games or watching videos on high frame rate.

A higher resolution and animation frame rate increase power consumption when playing games or watching videos on your iPhone.

  1. Updating to iOS 16

When updating to iOS 16, indexing activity goes on in the background. Spotlight reindexes the stuff on your phone, including notes, photos, and app data, while the Photos app reindexes and scans photos for objects, faces, places, and metadata. These tasks take up power and reduce your battery temporarily while they complete.

  1. A software issue

It might sound unusual, but the iPhone battery draining fast could be a software issue from being hacked. A malicious code or app on your iPhone can cause performance issues and make your battery run out faster than usual.

  1. Charging improperly

Perhaps the problem is your iPhone is not charging correctly. Go to Settings > Battery and check the Last Charge level on the Battery Level chart. If your device is charging correctly, you should see the battery level rise within the hatch marks. Otherwise, your charger and charging cable could be at fault.Click here to know more about how to charge properly.

  1. Some apps could be draining your battery with automatic downloads.

Some apps legitimately need a lot of background time to function. But, others can also signify a problem, especially with automatic downloads, and could cause battery drain.

  1. The battery is too hot

iPhone batteries use Lithium-ion technology, which suffers from stress when exposed to heat or high charge voltage. Exposing the battery to high temperature or high voltage by dwelling in a full state of charge for an extended time can result in iPhone battery draining fast.

  1. The battery is aging

A standard battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. Thus, a battery will have lower capacity as the battery chemically ages which may result in fewer hours of usage between charges.

Enable Battery Percentage in iOS 16

Better than before, i0S 16 includes an option to display battery percentage in the status bar. This way, you can monitor the performance of your battery and charge it when it goes below 20%. Unfortunately, this feature is only available on the supported iPhones below.

  • iPhone 13 Pro Max
  • iPhone 13 Pro
  • iPhone 13
  • iPhone 12 Pro Max
  • iPhone 12 Pro
  • iPhone 12
  • iPhone 11 Pro Max
  • iPhone 11 Pro
  • iPhone XS Max
  • iPhone XS
  • iPhone X


  1. Go to Settings > Battery.
  2. Toggle on Battery Percentage.


Connect to Wifi When It Is Possible

Still, wondering why is my iPhone battery draining so fast all of a sudden? Well, having Wi-Fi turned on drains your battery if you’re not using it. But, if you’re on a wireless network, it’s more power-efficient to use Wi-Fi than cellular data. Connect to Wi-Fi instead of your mobile network when possible to save your phone’s battery life.

Keep Your Battery Cool

Leaving your iPhone in direct sunlight or the car when it’s hot outside makes your iPhone hot, which directly results in the battery getting hot. Due to this, its energy output can be inconsistent, causing it to discharge a lot of heat and drain quickly.

It’s essential to avoid exposing your device to ambient temperatures higher than 95°F (35°C), which can permanently damage battery capacity. Otherwise, if your iPhone battery gets too hot, you can turn off your iPhone and allow it to cool down.


  1. To restart iPhone X or later;
    1. Hold down the Power button and any Volume Button.
    2. Drag the Power Icon to the right on the slider that appears.
    3. Allow your iPhone to cool down for a few minutes.
    4. Press and hold the Power button for a few seconds until the Apple logo appears, to turn on your iPhone.


  1. To restart iPhone SE, iPhone 8 or earlier;
    1. Press and hold the Power button for a few seconds.
    2. When the slide to power off slider appears at the top, press and drag the Power Icon to the right.
    3. Give the iPhone a few minutes to cool down.
    4. To turn on your iPhone, press and hold the Power button and release it when the Apple logo appears.


Activate Dark Mode

The screen on your iPhone drains a lot of battery life which could be why your iPhone is dying so fast. Luckily, swapping to dark mode can save battery life if you’re using an iPhone X, XS, XS Max, iPhone 11, iPhone 12, iPhone 13 or iPhone 14.


  1. Go to Settings > Focus.
  2. Select the Focus mode that you want Dark Mode to be enabled by. For example, Wind Down.
  3. Scroll down to Focus Filters and tap Add Filter.
  4. Navigate to System Filters and tap the Dark Mode card.
  5. Ensure Dark is shown in the Appearance selection, then tap Add.

Use Mobitrix Perfix to Fix the Software Issue

If you haven’t found a solution to your battery issue, it is possible an unknown software issue is why your iPhone battery is draining so fast. In such a case, you should turn to Mobitrix Perfix. It is a certified iOS repair tool that can quickly and effectively fix your problem, among other software issues. It fully supports iPhone 5s to iPhone 15 and iOS 17 and earlier versions.



  1. Downloadand install Mobitrix Perfix.
  2. Connect iPhone to Computer.
  3. Click on Start in the main menu.
  4. Identify Device Bug and click Fix Now.
  5. Select Advance Repair, read terms of use and tap Repair.
  6. Download Fixfile package, extract and start repairing.

 Why Is My iPhone Battery Draining So Fast

Why is your iPhone battery draining so fast all of a sudden? If your iPhone loses battery faster than you’d like it to or faster than you think is normal, we can help. We’ll answer common iPhone battery drain questions, and walk you through some simple solutions to stop your iPhone battery from dying fast.

Why Is My iPhone Dying Fast after Updating? iOS 17 Battery Drain

Are you wondering why your iPhone battery dies so fast? Is your iPhone losing charge after updating to iOS 17? You’re not alone. iOS update battery drain issues are extremely common and for good reason! A new iOS update drains battery because of the many big changes to your iPhone features that come with installing the most recent iOS software. The larger fall updates, like the iOS 17 update, often affect your iPhone battery more than the smaller updates we see throughout the year.

While some of this is unavoidable, there are certain things you can do to optimize your battery use and cut back on unnecessary iPhone battery drain. We’ll show you some iOS 17 battery-saving tips and offer guidance on how to preserve battery life on your iPhone.

Stop iPhone Battery from Draining Too Fast

You’ll want to start by checking your battery health in Settings. Odds are, your iPhone battery is fighting fit, but is being drained by unneeded processes running in the background. We’ll cover some easy solutions to prevent iOS battery drain on your iPhone. Also, if you enjoy learning about how to use your Apple devices, be sure to sign up for our free Tip of the Day.

1. Check Your iPhone Battery Health Suggestions

This is a good first step whether you’re worried that the iPhone update is draining the battery or not. Your iPhone will recommend specific changes in Settings to preserve iPhone battery life. To see why your iPhone battery is draining faster than it should be, use these steps to check Battery Health suggestions:

  1. Open the Settings app, then scroll down and tap Battery.
  2. Tap Battery Health & Charging.

On the next screen, your iPhone will suggest changes to settings that will improve battery life. You can tap on each suggestion to jump to the setting that needs changing. If you don’t want to make the change, at least you understand what’s contributing to your battery drain.

2. Dim Your iPhone Screen If Your iPhone Keeps Losing Charge

Keeping your iPhone’s screen at full brightness is a likely culprit when your iPhone battery drains fast, but it’s easily remedied. This is actually one of the main causes of battery drain and consumes more power than you might think! Here’s how to dim the screen brightness to save battery on your iPhone:

  1. Open the Control Center by swiping down from the top-right corner of the screen. If your iPhone has a Home button, swipe up from the bottom of the screen instead.
  2. Tap and drag the Brightness slider toward the bottom, or as near to the bottom as you can go and still comfortably read your display.

If you have your iPhone brightness set to a more reasonable level but your iPhone battery is draining quickly anyway, there are a lot more options for conserving battery on iPhone. Keep reading!

3. Turn on Auto-Brightness to Stop iPhone Battery Drain

Auto-Brightness settings adjust your screen lighting automatically based on ambient light levels. This keeps your iPhone from losing battery too quickly by wasting it on unnecessary screen brightness. To save battery on your iPhone by enabling Auto-Brightness:

  1. Open the Settings app, then scroll down and tap Accessibility.
  2. Tap Display & Text Size.
  3. Scroll to the bottom and toggle on Auto-Brightness.Next, we’ll take a look at some lesser-known settings to help improve iPhone battery life.

4. Turn Off Raise to Wake to Save iPhone Battery

All iPhone models have the Raise to Wake function enabled by default. This might be part of your problem, especially if you pick up your iPhone a lot or walk with it swinging in your hand. The iPhone screen constantly turning on will definitely drain your battery. To turn off Raise to Wake to save iPhone battery life:

  1. Open the Settings app, then scroll down and tap Display & Brightness.
  2. Scroll down to Raise to Wake and toggle it off. A gray toggle means Raise to Wake is disabled.

Once you’ve disabled this feature, you just have to tap your iPhone to wake it. Now that we’ve covered brightness settings that help prevent battery drain on iPhone, we can move on to things like apps that drain iPhone battery.

5. Turn Off the Always-On Display 

If you have an iPhone 14 or iPhone 15, your device has the Always-On Display that keeps your Lock Screen at a certain level of brightness, regardless of whether you’re currently looking at your iPhone. But does the Always-On Display feature drain your battery? Reducing screen brightness in any way will help to preserve your iPhone battery life, so if your iPhone battery is draining faster than you’d like, you should disable the Always-On Display:

  1. Open the Settings app, then scroll down and tap Display & Brightness.
  2. Tap Always-on Display.
  3. Tap the Always-On Display toggle to turn it off (the toggle will be gray when disabled).

iPhone Battery Draining So Fast All of a Sudden? Tips to Fix

Is your iPhone battery suddenly draining fast and you’re wondering why? Read this guide to learn 10 different ways to fix battery drain issues on iPhone and iPad.

“Why is my iPhone battery suddenly draining so fast?” “What’s happening to my iPhone’s battery?” “Why does my iPhone battery die so fast?” You’d find many iPhone users asking these questions —and other similar queries— when their device’s battery gets depleted faster than usual. Something is wrong if your iPhone used to last for about 10 hours on a full charge (100%) but barely runs for 5 hours.

In this guide, we aggregate 10 effective solutions that’ll help fix battery drain issues on your iPhone.

Why Is My iPhone Battery Draining So Fast All of a Sudden?

Well, there are numerous reasons your iPhone’s battery is suddenly draining fast. It could be due to factors ranging from battery-hungry apps and widgets running in the background, excessive display brightness, superfluous usage of location services, outdated apps, etc. The issue could also be hardware-related, i.e., a faulty/degraded battery. Read the tips we’ve compiled in the subsequent section and follow the instructions keenly to restore your iPhone’s battery to maximum performance.

 Tips to Fix iPhone Battery Draining So Fast All of a Sudden

As mentioned earlier, many factors contribute to the gradual deterioration of your iPhone’s battery. As such, there’s no one-size-fits-all solution for all iPhones. However, at least one of the troubleshooting solutions below should fix your iPhone’s battery drainage problem.

1. Check Battery Usage

If you notice that your iPhone battery is draining fast all of a sudden, the first port of call should be to check the device’s battery usage. Your iPhone’s battery might be depleting faster than usual because you’re using the device twice as much — which is absolutely normal. There’s only one way to find out, though.

iOS sports a built-in battery monitoring tool that compiles (battery) usage information of apps and services on your iPhone. This tool presents your device’s battery consumption stats in hourly or daily reports. Here’s how to check your iPhone’s battery usage.


Step 1: Launch Settings and select Battery. Wait for the tool to populate the Battery Usage information.

Step 2: Navigate to the Last 10 Days tab.

This section presents detailed information about your iPhone’s battery usage for the last 10 days in a bar chart.

It might be hard to grasp this information, but here’s what you need to know: if the bar for each day is significantly taller than the previous, this means you’ve been using your device for more battery-demanding activities than usual. Hence, the increase in battery usage. This could just be why your iPhone battery is suddenly draining fast.

Proceed to the next section to learn what to do.

2. Check for Battery-Consuming Apps

You’ve discovered your iPhone’s battery usage is off the roof. So what’s the next step? Find out the apps responsible for the battery drain; you’d find this information in your iPhone’s Battery section (Settings > Battery).

In the ‘Last 24 Hours’ tab, scroll to the ‘Battery Usage By App’ section to reveal the apps that consumed the most battery in the last 24 hours. Go to the ‘Last 10 Days’ tab to see an overview of apps that used the most battery in the past 10 days, arranged in descending order.

When you tap a single bar, it displays the battery usage by app for that particular day. Now that you’ve found the battery-consuming app(s), you should close them, especially when they aren’t being used— we will talk more about that in the next section. You could also disable ‘Background App Refresh’ (see Tip #7) for the apps. That should also help to reduce battery consumption.


3. Close Unused Apps Running in the Background

Another reason your iPhone battery dies fast all of a sudden is that you leave apps running in the background, even when they aren’t being used. You should always close or force-quit apps when you are done using them.

On iPhones with Touch ID/Home Button:

Step 1: Double-click the home button to reveal the app switcher.

Step 2: Swipe right or left to locate active apps you aren’t using.

Step 3: Swipe up the app’s preview to close it and stop it from running in the background.

On iPhones with Face ID (i.e., without home button):

Step 1: Swipe up from the bottom of the screen and release your finger when the app switcher is displayed.

Step 2: Swipe right or left to see the apps actively running on your device.

Step 3: To close an app, swipe its preview upward.

4. Update Apps

If your iPhone’s battery is draining fast, it could be due to app-related issues. An app might use more battery power than usual if:

  • It contains some bugs.
  • It isn’t optimized for your iPhone’s iOS version.

Luckily, app developers often roll out timely updates to fix these issues. Visit the App Store to update your apps and make sure they stay regularly updated. Launch the App Store and tap the profile icon at the top-right corner. Tap the Update All button to have all your apps update simultaneously.

Alternatively, tap the Update button next to the app to update them individually.

You could also automate the process by configuring your iPhone to update your apps immediately if there’s an update available in the App Store. Go to Settings > App Store and toggle on the Automatic Download options for Wi-Fi.


5. Remove Unwanted Widgets

Widgets provide quick and timely information from your apps at a glance, both on the home screen and lock screen. While they are cool and fancy, some widgets hurt your iPhone’s battery life because they require power to provide up-to-date information. In addition, some of these widgets (e.g., Smart Stack in iOS 14) constantly pull device data like time, location, and activity to display information. Again, this is cool, but it could be the reason why your iPhone battery dies all of a sudden.

Follow the below steps to remove widgets on your iPhone’s home screen and lock screen.

Remove the Widget from Home Screen

Step 1: Tap and hold the unused or unwanted widget.

Step 2: Select Remove Widget and tap Remove on the confirmation prompt.

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