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The telephone has become a tool -working, social and even leisure- so important that it is normal that, although it is always with us, there are many times when it ends up in the hands of another person. Whether it's for solving a question, watching a photo or video, or entertaining someone with a game, in those moments when we can't be aware of the content, our intimacy and privacy could be in danger. Unless one of the most useful and unknown Android functions is used.

The idea is very simple: fix the screen so that it is necessary to enter the unlock code to change applications or go to the home screen. However, whoever has the phone can use the active app without problems or restrictions.

To activate Fix the screen on an Android phone it is necessary to have at least version 9 of the operating system. Then, go to Settings and enter Security where is Set the screen (depending on the model, it may be that within Security you have to open Advanced Settings).

Once the function is active, any app can use it. To do this you have to open the list of recent applications (usually found at the bottom of the screen, opposite the back button; with gestures you have to slide your finger from the bottom to the center of the screen).

When browsing this menu, a preview of each program appears as it was when we minimized it and, above it, the application icon. If we keep pressing on it, a new menu will open with various options, among which is the one we want: Set the screen. You just have to select it to start working.

Deactivate the function (and recommendations)

Remember that this function disables the back buttons, recent applications and start, so you cannot exit the active app without disabling the function.

To do this, press back and recent , back and start at the same time if two-button navigation is activated or swipe up and hold in gesture navigation. At that time, the phone will request the unlock code, pattern or biometric system used to protect it.

On the other hand, it should be remembered that, although it is a useful function, it has certain limitations and is only intended to be used with trusted people. Thus, from any game it will be possible to make purchases and from social apps the gallery will be able to be seen without problems if it is opened to publish a photo.

According to the criteria of The Trust Project

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