Blue Light Filter
How to Use Blue Light Filter on Phone or Tablet to Reduce Eyestrain

If you’re the one who constantly uses smartphone or tablet at night, especially for browsing, reading articles, watching Twitch streams, or emailing, a suitable way to reduce blue light exposure is to use a blue light filter. The feature protects you from the significant amount of blue light emitted from your phone, tablet, or computer screen to reach into your eyes without affecting the visibility of the display.

How to Use Blue Light Filter on Phone or Tablet

In this article, we’ll tell you about how to use blue light filter on phone and tablet in order to reduce eyestrain. Read on.

It should be noted that the blue light from your smartphone or tablet can cause eyestrain and prevent you from falling asleep at night. However, there are various apps that adjust your screen color to reduce the blue light and help your eyes to relax, making it easier for you to fall asleep.

Use of Blue Light Filter

Before we get started with the process of how to use blue light filter on phone or tablet, let’s first talk about some scientific study.

You may have read that there’s an inverse relationship between the wavelength of light rays and the amount of energy they contain. So, the light rays having relatively longer wavelengths contain less energy while those with shorter wavelengths possess more energy.

As of short wavelength, high energy blue light spreads more easily than other visible lights. While looking at computer screens and various other digital systems emitting sufficient amount of blue light, you’ll get a poor visual effect that ultimately lowers the contrast and can contribute to eyestrain. Most notably, the display of your computer screens, electronic notebooks, smartphones, and several other digital devices emit the significant amount of blue light.

The main goal is to help users reduce eyestrain that can occur from staring at the device screen too long, and although not all blue light is filtered out, it is significantly reduced. Continue reading to know about how to reduce eyestrain.

Use of Blue Light Filter on Android

Use Blue Light Filter- Acer Predator 8

Let’s take up an example of a tablet, i.e. Acer Predator 8 to review for the blue light filter. You’ll find a toggle switch for Blue Light Shield within the notification area. If you’ll activate the blue light filter on your tablet or phone, your eyes will feel less strain and consequently, you’ll get more relaxed. It’s led to being able to enjoy reading articles over the Internet at night without getting strain in eyes.

If your phone or tablet has this built-in feature, give it a try once! If it’s not available on your device, you can head over to the Play Store and search for an app like Twilight to get same effects and results. It can automatically adjust to the day time in your surroundings. Just tap on the color temperature, intensity, and screen dim in the app. The app progressively lowers the color temperature of the display and dims the screen. It has an ability to block 20% to 35% of blue light on your phone or tablet. This simple feature makes you feel a lot better while using your mobiles or tablets. Give it a try!

Use Blue Light Filter - Twilight

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Use of Blue Light Filter on Samsung Galaxy S8 and S8+

You can also lower the amount of blue light at night in Samsung Galaxy S8 and S8+. Both the devices include a blue light filter feature that tints your phone’s screen to a reddish glow.

To enable the blue light filter in Samsung Galaxy S8 and S8+, follow the steps listed below:

      1. First of all, launch the Settings menu on your smartphone
      2. Next, scroll down until you find Display and tap on it
      3. Now, tap on Blue light filter. You’ll get the two options: when to turn on the light filter, and what the opacity is

Blue light filter - Samsung Galaxy S8 and S8+

      1. Press the Turn on now option to see what the blue light filter looks like
      2. If you use the Opacity slider at the top, you can adjust how strong the filter should be when it will activate. You can then turn off the blue light filter in order to adjust the other settings
      3. Select whether you’d like to have the filter turned on from sunset to sunrise, or on a specific schedule
      4. If you choose Custom schedule, you can set the hours manually. This way, the blue light filter will now turn on automatically each day.

The blue light filter of Samsung Galaxy S8 is a great feature that helps reduce eyestrain late at night and early in the morning. Once you’ve setup, the filter will automatically adjust itself and there’s no need to do any further configuration.

Also Read: How to Factory Reset Galaxy S8 and S8 Plus with Simple Steps

Use of Blue Light Filter on Samsung Galaxy S7

Galaxy S7 blue light filter lets you filter blue light to reduce eyestrain, especially in low-night environment. The smartphone will automatically adjust blue light filter at night, and revert to default colors in the morning.

To enable Galaxy S7 blue light filter, follow the steps given below:

  1. Go to Settings from the app tray or notification bar

Blue light filter - Display on Galaxy S7

  1. Now, choose Display > Blue light filter

Blue light filter - filter option on Galaxy S7

  1. Toggle the switch to On position, adjust slider to your preference

Continue reading to know how you can also set an automatic schedule to your sleeping pattern.

          1. Go to Settings > Display > Blue light filter
          2. Select Turn on as scheduled

Blue light filter - Turn on as Scheduled

          1. Now, tap Sunset to sunrise or Custom

Blue light filter - Custom Scheduled

          1. Select your Start and End time and that’s it

Use of Blue Light Filter on iOS

Talking about iOS, Apple has introduced the Blue Light Filter feature dubbed as Night Shift Mode with iOS 9.3. According to Apple, Night Shift automatically changes the color of your phone’s display to the warmer end of the color spectrum after dark. This may help you get a better sleep at night. While browsing the web at night, you’ll an exposure to blue light and consequently, it affects your sleep and causes other health problems. However, you can reduce the effect of late night light exposure by changing the dark color tone to warmer tones.

Once you’ll install and activate your iPhone after upgrading to iOS 9.3, you can activate the blue light filter, or enable Night Shift mode on your device. The new Night Shift mode adjusts the color temperature of your iPhone’s screen so that the device will have candle-lit tint instead of the crisp blue light, which is more stimulating to your brain. While enabling Night Shift mode on your iPhone or iPad, it feels natural and comfortable on eyes.

To activate Night Shift mode on iOS, all you need to do is just swipe up from the bottom of your device’s screen to open the Control Center and then, tap on the new Night Shift button. You’ll get a popup window that includes two options, namely Turn On Until 7 AM and Schedule Setting. Either you tap on the Turn On Until 7 AM option to see what Night Shift looks like, or you can choose the Schedule Settings option to go to the Night Shift settings.

Blue light filter - popup window

You can also access the Night Shift settings by navigating to the Settings menu > Display & Brightness > Night Shift.

Blue light filter - Display & brightness

Here, you can choose Scheduled to select your schedule or Manually Enabled to manually turn it on accordingly. Just toggle the Manually Enabled switch to ON position for the rest of the day and then, turn it off the next morning.

Now, let’s move on to the scheduling feature. Just tap on Scheduled and you’ll get a pre-populated schedule window. You need to tap on it to make necessary changes.

Blue light filter - Scheduled

You can configure Night Shift mode to automatically deactivate when the sun rises and activate when the sun sets. You can also set your own schedule based on the day time. Once you’re done, just tap on the blue Night Shift button at the upper-left side to go back to the settings menu.

Blue light filter - Night Shift Schedule

This way, you can adjust the warmth of the phone’s screen by using the slider at the bottom of the Night Shift menu. While tapping on the Night Shift slider, you’ll get to know about what level of warmth will look like when Night Shift turns on.

Blue light filter - Color temperature

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How to Use Blue Light Filter on Phone or Tablet to Reduce Eyestrain
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In this article, we’ll tell you about how to use blue light filter on phone and tablet in order to reduce eyestrain. Read on.
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NextGeekers
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Ajitender Kaur is a professional writer with an undying passion for writing and has always worked towards achieving excellence in her work. She has done her masters in Electronics & Communication Engg. Being a gadget geek, Kaur has enhanced her knowledge in every latest technology, making her capable of writing accurate and knowledgeable articles. Kaur loves to hang out with friends and explore new places. She is an aspiring writer who believes that dreams never die and never let your dreams starve.