Light and temperature, are the two most important factors responsible for regulating our sleep cycle. Show
For most of human history, our sleep has been guided by the sunlight. This has been disrupted by the rise of electric light and, more recently, by our constant usage of screens, which has led to a significant deterioration of our sleep quality. Screens emit a blueish light, in terms of wavelength, similar to the sunlight at noon. Being exposed to this kind of light in the evening confuses our body and reduces the production of melatonin, the hormone responsible for triggering sleep. Filter apps, by removing this blue light, turns your screen to a warmer, yellowish color, which reduces the negative impact of screens on sleep quality. Even then, we would like to add, that it’s better to stay away from screens before sleep. While those apps will help you get better sleep, checking social media or messaging your friends will increase brain activity and will keep you awake longer. Select your device
iPhone and iPad (iOS)To activate the blue light filter on your iPhone or iPad (iOS), go to Settings > Display & Brightness > Night Shift. You can then schedule the feature for specific times of the day, or enable it until the next day, or adjust your screen’s color temperature, thereby filtering out the blue light. Step 1. SettingsStep 2. Display & BrightnessStep 3. Night ShiftiOS blue light filter requirementsTo run the native blue light filter app ‘Night Shift’ on your iOS device, you must be running iOS version 9.3 or newer (iPhone 5s or iPad 2). Mac (MacOS)Apple added a blue light filter for Mac OS in March 2017 called ‘Night Shift'. To activate the feature, go to System Preferences > Displays > Night Shift. You can choose to activate it between sunset and sunrise or specific hours, or enable it until the next day, or adjust your Mac’s screen color temperature. Step 1. System PreferencesStep 2. DisplaysStep 3. Night ShiftMacOS blue light filter requirementsTo run the blue light filter feature ‘Night Shift’ on your Apple Mac, you must be running MacOS version Sierra 10.12.4 or newer on one of the following Mac computers...
AndroidTo activate the blue light filter on your Android phone or tablet, go to Settings > Display > Night Light or Blue Light Feature (depending on your device). You can then schedule the blue light filter between specific hours, or adjust your device’s ‘Intensity’, allowing you to filter out the blue light. Step 1. SettingsStep 2. DisplayStep 3. Night LightAndroid blue light filter requirementsSeveral Android manufacturers include blue light filters into their devices. Google’s Pixel and Pixel 2 have this feature built-in, along with other manufacturers such as, Honor, Huawei, Asus, OnePlus, Samsung. If you’re running an older version of Android, like Android One or stock Android, and can’t find this feature, there are a number of apps that can help you achieve the same results, such as Twilight and Blue Light Filter. WindowsTo activate the blue light filter feature, ‘Night Light’, on Windows 10, right click on your desktop > Display Settings. This will open a window where you can toggle the blue light filter. To configure the feature, go to Night Light Settings, to adjust the colour temperature and schedule blue light filtering between specific times. Step 1. Desktop (right-click)Step 2. Display SettingsStep 3. Night LightDoes iPhone have a blue light mode?Your iPhone and iPad devices offer users a feature called Night Shift, which helps you filter out the blue light by changing your device's screen temperature to a warmer colour.
How do I turn on the blue light filter on my phone?Most Android phones have a built-in blue light filter which you'll usually find in the Display section of Settings. For example, on a Samsung Galaxy S9 you can enable the feature by going to Settings > Display and turning on the Blue light filter option. On Honour and Huawei phones, it's called Eye Comfort.
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