How to Turn Off Blue Light on iPhone 15: A Step-by-Step Guide

Turning off the blue light on your iPhone 15 can be a breeze if you know where to look. In just a few taps, you can activate a feature called Night Shift, which reduces the amount of blue light emitted by your screen, making it easier on your eyes. It’s perfect for winding down before bedtime or whenever you need a break from harsh screen light.

Step by Step Tutorial: Turning Off Blue Light on iPhone 15

Before we dive into the nitty-gritty, let’s clarify what we’re about to do. These steps will guide you through enabling Night Shift on your iPhone 15, which will adjust your screen to a warmer color temperature and reduce blue light exposure.

Step 1: Open Settings

Access your iPhone 15’s settings by tapping on the gear icon.

In the settings menu, you’ll find a variety of options to customize and control your device. We’re looking for the display and brightness settings.

Step 2: Tap on Display & Brightness

Select the ‘Display & Brightness’ option from the settings menu.

This is where you can adjust screen brightness, text size, and other display-related settings. We’ll be focusing on the Night Shift feature here.

Step 3: Select Night Shift

Find and tap on the ‘Night Shift’ option.

Night Shift is a built-in feature on iPhones that’s specifically designed to reduce blue light and protect your eyes, especially in low-light conditions.

Step 4: Schedule Night Shift

Set up a schedule for Night Shift to automatically turn on or manually enable it until the next day.

You can opt to have Night Shift turn on from sunset to sunrise, or set custom times that work best for you.

Step 5: Adjust Color Temperature

Slide to adjust the color temperature to your preference.

Once Night Shift is enabled, you can tweak the warmth of your screen’s colors. Moving the slider toward ‘More Warm’ will result in less blue light.

After completing these steps, your iPhone 15 will emit less blue light, which should make your screen easier on the eyes, particularly in the evening hours. Keep in mind that the warmer screen tones might take some getting used to, but many users find it greatly improves their sleep quality if they use their phone before bed.

Tips for Turning Off Blue Light on iPhone 15

  • Use Night Shift during the evening to reduce eye strain.
  • Customize the Night Shift schedule to fit your daily routine.
  • Gradually increase the warmth to ease into the change.
  • Remember to adjust your brightness settings for optimal viewing.
  • Night Shift can be quickly toggled on or off from the Control Center for convenience.

Frequently Asked Questions

Does turning off blue light actually help with sleep?

Reducing blue light exposure, especially before bedtime, can help increase your body’s production of melatonin, the sleep hormone, potentially leading to better sleep quality.

Can I use Night Shift during the day?

Absolutely! If you find that your eyes are sensitive to your iPhone’s screen light, you can schedule Night Shift to be on during the day as well.

Will Night Shift affect the colors in photos and videos?

Night Shift may slightly alter the appearance of colors on your screen. If accurate color representation is important for a task, you might want to temporarily disable Night Shift.

Is Night Shift available on all iPhones?

Night Shift is available on iPhone 5s and later models running iOS 9.3 or later.

Can I still use True Tone with Night Shift?

Yes, you can. True Tone technology automatically adjusts your iPhone’s display to match the ambient light in your environment, and it works in tandem with Night Shift.


  1. Open Settings
  2. Tap on Display & Brightness
  3. Select Night Shift
  4. Schedule Night Shift
  5. Adjust Color Temperature


Turning off the blue light on your iPhone 15 is a smart way to protect your eyes and potentially improve your sleep if you’re the type to scroll through your phone before hitting the hay. Night Shift is a handy feature that Apple has included to make this process straightforward and customizable to fit your lifestyle. Whether you’re setting it up to run from sunset to sunrise or during specific hours, the goal is to lessen the strain on your eyes and help you wind down when it’s time to rest. Remember, it’s not just about sleep; reducing blue light exposure can also reduce eye strain and discomfort during the day. So, give it a try, tweak it to your liking, and enjoy a more comfortable viewing experience on your iPhone 15.