How to Turn Off Blue Light on iPhone? [Answers and Fixes]

The blue light will affect your sleep cycle if you are overexposed to it. To reduce its adverse effects of it Apple introduced Night SHift feature to reduce the blue light emission. This guide helps you to understand and customize the night shift settings on your iPhone.

Myra updated on Jul 24, 2023 | Home > iOS & Mac Topics

Electronic devices emit blue light and are very harmful to your health if you are using the devices for a prolonged period. The iPhones also emit blue light. While it is impossible to stop using your iPhone, we can reduce the amount of blue light our eyes consume. This guide will teach us methods to turn off blue light on iPhone.

If your eyes are exposed to blue light before bed or at night, it can cause sleeplessness and dry eyes. So users have started to look for ways to filter the blue light for better sleep. Apple has a "Night Shift" feature to make this process.

In this article, we will discuss blue light, how it affects our eyes and how to turn off or reduce its extent on our iPhones.

What Is Blue Light and How Does It Affect the Body

Blue light is one of the three colours of the world, Red, Green and Blue. All the colours we see every day are saturations of these three colours. Digital Screens emit blue light due to the reactions that happen on them to light the LEDs under the screen. Our eyes catch it as it matches its wavelength of it.

If you are wondering how much blue light impacts your eyes, we are generally exposed to many colours in our daily life, including blue light. Still, if we cannot perceive it, it is nighttime, and our body tries to produce melatonin hormone to help us sleep.

If we overuse our digital gadgets for long periods in the evening or night, it tricks our bodies into thinking it is still daytime and delays melanin production. This causes sleeplessness, and their short wavelength will penetrate our eyes and damage our retina cells.

How to Turn Off Blue Light on iPhone

We can use the Night Shift feature to adjust our screen colour. We can make it cooler or warmer to reduce the blue light exposure. We can access this using the control centre or settings. This feature is available on iPhone 5S or later models.

1. Turn on Night Shift using Control Center

Using the control centre, we can turn on the default sunset to sunrise night shift feature.

Step 1.  Swipe down from the top-right corner of your screen to open the Control Centre on your iPhone.

Reminder: For iPhone 8 and earlier, swipe up from the bottom of your screen to open the control centre.

Step 2. Press and Hold the Screen Brightness control icon.

control center

Step 3. You can see, three options under it, Dark Mode, Night Shift, and True Tone.

Step 4. Tap the Night Shift to turn the default night shift settings on.

2. Turn On Night Shift Using Settings

Step 1. Open the settings app on your iPhone and Navigate to the Display and Brightness section.


Step 2. Tap on the Night Shift Settings to change the screen temperature of your iPhone. Using the slider to reduce the blue light emission, you can adjust it to a warmer colour.

night shift

3. Customizing the Night Shift Settings on iPhone

Apple offers a few other settings in the Night Shift feature to customize the screen colour and what colour to use. 

Manually Enable Until Tomorrow

This setting temporarily activates the blue light filer until the next day's morning.


We can also schedule the timing to turn the filer on and off on our iPhones. Use the From and to time to select the period in which your iPhone activates the blue light filter.


The default Night shift settings on the Control centre turn on the filter for Sunset to Sunrise based on your time zone. If you do not have this setting enabled, go to Settings > Privacy > Location Services > System Services, and turn the Time Zone Option ON.


FAQs on Turning Off Blue Light on iPhone

Here are some of the most frequent FAQs asked on the topic. If you have similar queries hope this will help you.

1. Does iPhone night mode reduce blue light?

iPhone introduced the night mode to reduce the extent of blue light the user consumes. It uses a filtered amber version to control the blue light emission.

2. Do iPhones emit blue light?

Many Electronic devices emit the blue, and So is iPhone. Due to the fluorescent effect, the electronic device emits blue light while turning on the LEDs to brighten the screen.

3. Is phone blue light harmful?

Blue light is harmful if you are overexposed to it. It stimulates the brain, tricks it into believing it's still daytime and reduces sleeplessness for the user.

The Final Verdict

Blue light is only harmful if you are overly exposed to it during the night and will adversely affect your sleep cycle. The article discusses how to turn off blue light on iPhone and customize its settings.

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