Detailed explanation of iPhone power saving mode: A practical guide to extending battery life

Your iPhone comes with a practical feature called "Low Battery Mode". When the battery level drops to 20%, you will be prompted to activate this mode, which can extend up to one to three hours of battery life.

Even better, you can automatically enable low battery mode before reaching the critical point to further extend battery life. Want to know how it works? Let's learn about it together.

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Low battery mode function

When the iPhone is low on battery, the low battery mode will help you. This feature optimizes device settings to save battery power and make full use of the remaining power.

Let's take a look at what the low battery mode does on your iPhone/iPad:

• Disable non-critical features: Low-battery mode will scan your iPhone settings, selectively disable or adjust certain currently unwanted features and settings.

• Reduce background tasks: To save power, it slows down or pauses various background tasks and processes that usually consume power. These include email retrieval, background application refresh and automatic download.

• Adjust display settings: Low battery mode will reduce the display brightness. It also reduces the time the display automatically turns off when it is idle, so the display stays active for a shorter time.

• Limit connection options: iPhone low battery mode also temporarily disables certain connection features. For example, it will turn off 5G connections (except video streaming) and may limit other wireless connections.

• Optimized Performance: To further extend battery life, the power saving mode reduces the overall performance of the iPhone CPU and GPU.

Note: Normally, you won't realize that your phone is using too much memory unless your phone starts to fail or your battery is running too fast. If you want to keep an eye on the performance of your iPhone, I recommend you try the Usage app. It provides convenient widgets that keep you abreast of key information on your iPhone at any time.

So, is the low battery mode effective? Absolutely effective! It can extend battery life up to 3 hours and is very useful in travel or emergency situations. Especially valuable for older iPhone models, optimizing performance even if the battery is aging.

Enable or disable low battery mode on iPhone and iPad

As mentioned earlier, you can enable low battery mode at any time. Suppose you will have a busy day and know that you won't be able to charge your phone for a while.

To enable low battery mode, follow these steps:

1. On your iPhone, open the Settings app.
2. Scroll down to "Battery" and click on it.
3. Turn on the switch next to "Low Battery Mode".

When your iPhone is in low battery mode, the battery indicator in the status bar turns yellow.

You might be wondering why not use low-battery mode often to extend battery life? Well, I don't recommend this.

Of course, your phone may be able to last longer on a single charge, and the battery wear may slow down over time, but this brings a downside: your phone will run as much as 40% less and some features, including background app updates, will be limited. Personally, I don't want to risk missing out on timely notifications in order to save a few percentages of the battery. So, I recommend that you only use the iPhone's low battery mode if you really need to save power.

How to turn off low battery mode? If the phone is charging, this mode will automatically turn off when the device's battery exceeds 80%. To manually disable low battery mode, go to Settings > Battery. Or you can say to Siri, "Hey Siri, turn off low battery mode."

My experience I don't like using low battery mode frequently because it reduces the functionality of the phone. Instead, I focused on keeping my phone fully charged throughout the day. One way I do this is to use the Batteries app (on my Mac) which monitors the battery status of all connected devices. In my case, including the iPhone, Magic Mouse, and AirPods (you can see in the screenshot below). When the power of any device reaches a certain level, I will receive a charging reminder.

How to add a low battery mode to the control center

Where is the control center on the iPhone? Simply swipe down from the upper right corner of the screen and you will see some icons that give you quick access to certain actions. There, you can switch low battery mode without having to go through the Settings app every time. However, it is not enabled by default, so you need to add the low-battery mode toggle to the control center first.

The operation method is as follows:

1. Swipe down from the upper right corner to open the Control Center.
2. Press and hold the screen.
3. At the bottom, click "Add Control".
4. Select "Low Battery Mode".
5. Once added, you can hold and drag the toggle to move it anywhere in the control center.
6. Click the screen again to complete the operation.

The Control Center will now have a low-battery mode shortcut option.

Note: I noticed that my iPhone battery life may be affected by the size of the photo library. It seems like a cluttered photo gallery may make your phone work harder when working on media files, generating preview albums, or backing up files to iCloud. So if you are experiencing problems with your battery drain too quickly, try cleaning up your photo library instead of using low battery mode frequently. In this case, my preferred tool is the CleanMy? Phone, which can remove similar photos, duplicates, and more, freeing up valuable space on the iPhone.

Quick access to low battery mode on the home screen

In iOS 14 and later, you can also use the Shortcuts app to add low battery mode to your iPhone's home screen for quick access.

To add a low-battery mode shortcut to the iPhone home screen:

1. Open "Shortcuts" and click the " " button in the upper right corner.
2. In the search bar at the top, type "Low battery" and select "Set low battery mode".
3. Click the word "Open" and select "Switch" from the "Operation" menu.
4. Click the Settings button and select Add to Home Screen.
5. Name the shortcut, such as "Low Battery Mode", and you can select an icon if you want.
6. Click "Add" in the upper right corner and click "Done".

That's it. The Low Battery Mode icon will now appear on your iPhone home screen. To enable or disable low battery mode, simply click the shortcut icon from the home screen.

Further enhance your iPhone experience

At the heart of the low battery mode is a powerful feature that helps optimize the battery life of the iPhone. It's a built-in savior, but it's easier to track and maintain battery life with Batteries and Usage apps. They are part of the Setapp platform, which contains over 250 other useful Mac, iOS, and web applications. Even better, you can try Setapp for free and experience these improvements firsthand.

Frequently Asked Questions

Is the iPhone or iPad charging faster in low battery mode?

No, because it will only turn off certain features. So if you need to charge your iPhone faster, you don't need to enable it.

Will charging speeds slow down in low battery mode?

No, the low battery mode will not directly affect the charging speed of the iPhone.

Why use low battery mode?

You may want to switch to low battery mode to extend battery life and save your iPhone's power.

Can I keep my iPhone in low battery mode all the time?

This may not damage your phone, but it will certainly cause a lot of inconvenience. In low battery mode, some visual effects and dynamic wallpapers are disabled, background activity and network connections are paused, and iPhone's CPU and GPU performance will automatically decrease, resulting in slightly reduced performance, but longer battery life. As you can see, the low battery mode is very aggressive, which is why it is not always on. It will help you extend the battery life of your phone when you need it, but you may not always want to use it.

Will low battery mode slow down?

Tests show that when low battery mode is enabled, the iPhone will be reduced by about 40%.

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