You Can Extend Your Phone Battery With Few Settings And Wallpaper Changer

Improving battery life of a the phone it tends to be more focused, especially since we use our phones more and more for everything from watching movies to exploring AI productivity features. And we know that people are looking for solutions to help extend battery life, whether it’s getting new phones with better batteries or using power banks. A CNET survey as of May 2026 found that 58% of smartphone owners are frustrated with their device’s battery life. In fact, long battery life (52%) is the second biggest driver (after price at 55%) of their decision to get a new phone.

But as phones and other electronic devices last getting expensiveyou may want to look at other ways to get more out of the phone you have — including ways to improve battery life. The good news is that if your phone has an OLED or AMOLED display, there are a few tweaks you can make to reduce how quickly its battery drains to power that screen. And there’s a good chance you actually have a phone with this kind of screen technology: According to a Counterpoint Research report from May, about 87% of smartphones in the US have it.

Can these two settings really help save battery on OLED smartphones?

The display is the most active part of your smartphone — and to save battery, we need to find ways to reduce its activity. The easiest way to do this is by adding a dark wallpaper and enabling dark mode on your device.

The OLED panel then draws very low power due to its structure. It works per pixel as opposed to having a fixed backlight to illuminate the pixels (LCD), which consumes about 30% more current than Dynamic AMOLED, according to a paper published in IEEE.

If you add a dark background to your home screen, it will cover more pixels on an OLED-equipped smartphone, allowing it to last longer on a single charge. Some may believe it to be a myth, but according to a research paper from IEEE, black color consumes very low power (~250 mW). In comparison, white is the most power-hungry color in an OLED display, taking about 1,250 mW of battery power.

You will notice a big difference in battery efficiency between light mode and dark mode when using the phone in direct sunlight. As brightness is maximized, dark mode (and its black background in applications) consumes much less power, compared to light mode with its white background.

However, setting a deep black background on the home screen may cause high contrast and readability problems for some people. A 2025 study from the University of the North, Croatia, found that background color in a digital system has a significant impact on readability. It found a specific shade of dark gray (#121212) to “significantly reduce the number of reading errors,” while dark blue (#15202B) led to faster text reading.

If you want the best performance and reading on your OLED display smartphone, you should choose a dark gray background in dark mode. Here’s how to set both settings on your iPhone or Android device.

How to enable dark mode on iPhone

All for now iPhone models in the market — from the iPhone 17E of iPhone 17 Pro Max — have an OLED display. That means you can turn on dark mode to save battery on your iPhone. This includes most iPhone models released since The iPhone 12 lineapart from iPhone SE. Here’s how you can find and enable this setting:

1. Go to Settings.
2. Scroll down to Display & Light.
3. Select It’s dark to turn on dark mode.

However, not everyone likes dark mode all the time. I prefer my iPhone to be in light mode during the day, so I programmed dark mode from 6pm to 11 am on my device. You can set it to turn on automatically at a time you like by simply changing the toggle and adding a schedule. Here’s how:

1. Go to Settings > Display & Light.
2. Below the light and dark options, there are Default convert. Open it.
3. Tap Options and set your favorite program.

If the schedule doesn’t work for you, I recommend adding a dark mode toggle in Control Center for easy access. This way, you can simply swipe down from the top of your home screen and turn on dark mode with a tap. To do this:

1. Open it Control Center on your iPhone.
2. Touch and hold an empty space on it.
3. You will find the Add a Controller option at the bottom of the screen. Tap on it.
4. Search Dark Mode and press set.
5. Drag and drop the icon where you want to place it in the Control Center.
6. Tap anywhere on the empty space to save this status.

How to add black or dark wallpaper on iPhone

Before you go through the next steps, you must first find a dark background image that you would like to use. There are many options out there, whether you’re looking for a solid background or an almost black wallpaper with some designs. When you choose a wallpaper you like, download and save the image to your iPhone. Once you’ve done that, you’re now ready to add a black background to your home screen and lock screen. Here’s how:

1. Go to Settings.
2. Scroll down to find out Wallpaper and click on it.
3. Tap Pictures and select the image you just saved.
4. If you want, you can customize it with widgets. When you’re done, tap Add.
5. Tap Set as Wallpaper pair, so it is added to both your home screen and lock screen.

Now you are ready! The combination of dark mode and near-black background should help your iPhone last longer on a single charge.

How to enable dark mode on Android phone

The settings menu on an Android phone may vary depending on the brand you are using. For example, a setting can be placed under a separate menu in a Samsung Galaxy phone against a Google Pixel device. However, there will always be differences in attendance Settings > Show and open the Dark theme convert. Several Android manufacturers, including OnePlus and Oppo, have them under Settings > Display and light > It’s darksimilar to the Apple iPhone.

You can enable dark mode on your Android phone by following these steps:

1. Go to Settings.
2. Scroll to find out Show or Show & touchdepending on the phone.
3. Tap It’s dark.

Just like iPhone, you can program dark mode on your Android phone. I’ll break it down into two broad categories:

Set dark mode on Samsung Galaxy phones:

1. Go to Settings > Show.
2. Underneath Light and darkyou have to get Black mode settings option. Tap on it.
3. Select Open as planned.
4. Tap Custom Schedule. This will allow you to add your desired time to this setting.

Set up dark mode on Google Pixel phones:

1. Go to Settings > Show & touch.
2. Tap Schedule.
3. Now, you can optionally add a custom time It opens at a custom time.

4. Add your preferred time to automatically turn on dark mode every day.

How to add black or dark wallpaper on Android phone

Like other settings, changing the wallpaper varies from one Android phone to another. Some may also offer solid color options, so you don’t need to download this image. But for the sake of this tutorial, I will stick to one process. I recommend saving the image to your gallery.

To change the wallpaper on your Android phone:

1. Long press on space on your home screen.
2. Tap Background images in the end.
3. Select Select a picture (this option may differ depending on your phone. Tap the option that allows you to select an image from the gallery).
4. Select the image you just downloaded.
5. Tap Watch first > Claim.

Just like the iPhone, you can always add widgets and customize the look of your clock after setting this wallpaper. Your Android phone is now ready to save battery with good display.