The blue light filter on iPhone, also known as “Night Shift,” is a feature made to ease eye strain and make using an iPhone or iPad more comfortable during evening or night. As you can see from the name, the feature reduces the amount of blue light the screen emits. That makes the screen “warmer” with a slightly more yellowish hue.
Many companies, including Apple, claim the blue light filter positively affects your body and improves sleep quality. It also allegedly makes it easier for you to fall asleep. While that statement is debatable among scientists, users say that “Night Shift” on iPhone makes using devices in the evenings slightly more comfortable. We cannot say whether the blue light filter on our iPhone helps us sleep better, but it surely reduces the eye strain.
Nowadays, every modern smartphone, tablet, computer, and even e-book has a blue light filter. In this article, though, we will focus on how to reduce blue light on iPhone. If you wonder how to turn on the Blue light filter on your iPhone, this article will shows you all the details.
Does My iPhone Support the Blue Light Filter?
The blue light filter on iPhone (Night Shift) works on any relatively modern iPhone. Apple introduced the feature in iOS 9.4.
To enable the blue light filter on iPhone, you need iPhone 5S or newer and an iPad Air/mini 2 or newer. Although iPhone 5 and older models support iOS 9.4; Night Shift does not work on iPhones released before 5S and iPads before the first-gen Air. It is possible that the feature requires capabilities missing on devices with CPUs older than Apple A7.
Turn on Blue Light Filter on iPhone
You can enable the blue light filter on your iPhone by asking Siri. That is the fastest way to reduce blue light on iPhone. Invoke the voice assistant and say:
“Turn on Night Shift.”
Siri will turn on the blue light filter and keep it on until the next sunrise.
How to Turn on the Blue Light Filter on iPhone?
Open the control center by scrolling down from the upper-right corner of the screen (on iPhones with FaceID) or from the bottom of the screen (on iPhones with TouchID and the Home button), and hold the brightness slider. Then, tap the middle Night Shift button. Again, that action will turn on the blue light filter until the next sunrise.
How to Turn off Blue Light on iPad?
To make things clearer, we want to note that this article applies to both iPhones and iPads. All the ideas and UIs are identical on those devices.
How to Make iPhone Turn on the Blue Light Filter Automatically on Schedule?
You can make your iPhone automatically turn Night Shift on or off following sunrise/sunset at your current location. There is also another option that allows you to create a custom schedule. For example, from 8 PM to 8 AM every day regardless of sunset/sunrise.
- Open Settings, then go to Display and Brightness.
- Tap Night Shift.
- Toggle on Manually Enable Until Tomorrow. That will turn on the blue light filter until the next sunrise. You need to repeat this step every day. If you want to automate the process, follow the next step.
- To make an iPhone automatically turn Night Shift on or off, enable the Scheduled option.
- Tap From/To and select the option that fits you best. From our experience, we can tell that Sunset to Sunrise works the best because it ensures Night Shift is on during the dark hours. If that is not your cup of tea, select Custom Schedule and specify the hours.
How to Disable the Blue Light Filter on an iPhone?
Again, there are several ways to disable the blue light filter on your iPhone:
- Ask Siri. Just say:
“Hey Siri, turn off Night Shift.“
Note, if you have scheduled Night Shift, it will turn back on the next sunset. If you want to disable the blue light filter on your iPhone permanently, use the third option in this list.
- Use Control Center. Open Control Center (pull up on iPhones with the Home button), tap and hold the brightness slider, then tap the Night Shift button. Again, that action disables the blue light filter until the next sunrise in case you have scheduled Night Shift.
- Use Settings. Go to Settings > Display and Brightness. Tap Night Shift, then disable Scheduled or Manually Enable Until Tomorrow.
Change the Blue Light Filter Intensity on an iPhone
You can make the blue light filter more or less intensive using a slider in settings.
- Go to Settings > Display and Brightness.
- Tap Night Shift.
- Find the Color Temperature slider and set the preferred level. Your iPhone will show a preview when you hold the slider.
Blue Light Filter Apps for iPhone
Apple does not allow third-party apps from the App Store to mimic the Night Shift’s capabilities. That means you cannot use blue light filter apps from third-party developers. On Android, though, things are opposite, and you can use a set of different blue light filter apps from various developers.
It is also worth noting that third-party tweaks for jailbroken iPhones may offer more advanced settings, scheduling and customization option. Because jailbreak is no longer common and a regular consumer won’t bother with it, we decided to focus on creating a universal guide that describes how to turn off blue light on iPhone.
That is it. Now you know how to use the blue light filter on your iPhone or iPad.