Surely you have already realized that Android is an operating system full of customization features, as well as cult secrets hidden throughout the interface. In this post we are going to show you how to turn your mobile screen black and white, either to scare a friend into believing that his phone has broken or just out of curiosity.
With the program developed by Google you can modify all kinds of aspects, such as the shape of the icons, the color palette they use, distribution in cells, transitions and many more. One of the sections most susceptible to changes is the smartphone screen, since you can alter the fluidity of the animations (refresh rate) and increase or decrease its speed. However, there is also the possibility of altering its color, but it is a quality that few know.

Change the color of the mobile screen
Many may ask themselves why they would change the phone screen to black and white. This is completely logical, although you will be interested to know that it is more useful than it seems, especially for those users with vision problems , because through these tones they will be able to better observe the details of the images on the screen. Another of its uses is to reduce battery consumption by not using a full range of colors, but, of course, you will lose the pleasure of fully appreciating the nuances.
Android
It should be noted that there is absolutely nothing to download or carry out complex processes such as rooting the device, so there is nothing to fear. In fact, it is only necessary to activate the developer settings and enable a specific option. Accessing this configuration is not complicated at all and below we will briefly explain, but in detail, the steps that you must follow both for it and to establish the black and white screen:
- Open your smartphone settings and go to the “About phone” section.
- Inside you must locate the “Version” or “Build number” section, which may appear in one of the various blocks of the previous section. Once you have it in front of you, tap repeatedly until a message appears indicating that you have activated the developer settings.
- Enter the unlock password if prompted.
- Within the settings or in “System settings” you have to access “Developer options”.
- Within the “Hardware accelerated rendering” section, a function called “Simulate color space” will appear.
- Among the different possibilities, choose “Achromatopsia” and then you will see how the screen turns black and white.

To return to normal, you just have to go back to the same option and select “Disabled” . You can try the rest of the alternatives to see how the screen of your smartphone changes. Now that you know this peculiarity of Android, you have within your reach the possibility of playing a prank on a friend by telling him that the screen of the device has been damaged. In general, it does not have a great use beyond saving battery, but for this there are a large number of alternatives that do not go through losing image quality.
iPhone
It is necessary to point out that in Apple mobiles you can also carry out this option, although you do not even have to enable a function such as developer settings. So it’s much easier , since the option to do so is simply within the settings:

- Open the settings on your iPhone.
- Swipe until you find the “General” section and access “Accessibility”.
- Locate the “Screen and text size” section and then “Color filters”.
- Enable this last option and select “Grayscale”.