What is it, what is it for and how to activate the blue light filter on Android, iPhone and PC?

Through the following guide we will tell you what it is, what it is for and how to activate the blue light filter on android, iphone and pc, a feature that can help you, especially at night.

It is worth knowing what blue light emanating from a device screen means and the effects this can generate. Having understood this, it is convenient to know what the blue light filter is for.

What is the blue light filter and what is it for?

You may have come across the term "blue light filter", in fact it is very common to have this option on multiple devices. But what is the blue light filter about? In short, it is a filter that you apply for avoid visual fatigue.




This filter is not to be confused with dark mode, as the previous one focuses only on protecting our eyes, while the blue light filter should help us fall asleep. In any case, it is also possible to easily activate the dark mode or dark mode of Facebook and other applications.

This filter is able to help us fall asleep. It has been shown that the blue light keeps us active, while the tones closer to red, help during sleep, as well as reduce digital visual fatigue when using your PC and mobile phone. For this reason, the blue light filter is also often referred to as the night light filter.

No matter what you call it, the purpose of this feature is to use it at night, to help us sleep more easily. In turn, we protect our eyesight, as these warmer tones are less harmful.

Activate the Android night light filter

What is it, what is it for and how to activate the blue light filter on Android, iPhone and PC?



  • For Android you have to go to the system settings by clicking on the "Settings" option.
  • In the setup menu, search for the section ' Display’. This may differ depending on the model of device you own, but in most cases the so-called appears "Blue Light Filter".
  • To activate it just press the activation button, in turn you can also make various configurations in relation to this mode.
  • On the other hand, if this option does not appear, the so-called option is usually displayed "Night mode" where we get a kind of dark mode. This can also be useful for protecting vision at night. Also, you can configure and program it.

Turn on the blue light filter on the iPhone

  • To activate night light mode on iPhone or iPad phones, you need to go to " Settings ".
  • Once you are in the system settings, locate the section " Screen and brightness ", then you need to locate the “Night Light” tab. To activate it, you just have to press on it.
  • In any case, remember that you can also configure the schedule in which this mode is activated to your liking.

Enable night light filter on PC

  • In the case of Windows, the activation of the blue light filter is very simple, just go to the beginning and then click on " Settings on the PC ".
  • All Windows options will appear, this time you have to click on the “System” tab. Once there, look for the “screen” section.
  • At first the 'Night Light' option will appear. Activating it is very simple, you just have to click on the button ' Night light settings '. Process after which you will be taken to a setup menu.
  • At the top you will see the option " Activate now ", pressing on it will activate the blue light filter mode. However, as you can see, the intensity option also appears, which allows you to configure the intensity in this way.
  • At lower intensity more blue light will be shown, at higher intensity the tones will go more towards red. Configure it to your liking, although you can leave it as is by default, which is right in the middle.

What is it, what is it for and how to activate the blue light filter on Android, iPhone and PC?




Remember that you can schedule the automatic activation of the night light. To do this, click on ' Night light program '  and configure it according to your needs.

In turn, it is highly recommended to activate Microsoft Office dark mode and other similar functions to protect your eyesight.

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