The touch screen of our mobile is the fundamental pillar for everything to work properly. There was a time when touch screens coexisted with physical keyboards and keys that allowed access to all the content of our mobile. For this reason, it is more important than ever to know how to detect faults on the touch screen it is important to avoid scares.

When the touch screen of our mobile begins to do strange things or not respond as it should, there can be multiple failures that may be causing it. Among them software failures or even physical problems may require the replacement of the screen. But we can always test the touch screen ourselves, before jumping to conclusions.

How to know if the touch fails

The first thing we will have to do is make sure that the problem on the touch screen always occurs at the same point and executing the same task. That is, if the problem occurs on the desktop when you want to drag an app or within a game where the fire button does not work correctly.

Hardware or software problem?

This may allow us to download a hardware or software problem. On many occasions, it is the applications themselves that make us believe that it is the screen that fails when in reality it is a problem of compatibility or operation of the application itself. If within a game or app, you touch at one point and it does not work, but that same point on the screen works when you are in another app or on the desktop, we already know that the culprit is the app and not the touch screen.

Test the screen

Likewise, there are certain internal and third-party tools to be able to get out of doubts. The first of them we find in Android with an infallible method to know if our touch screen has problems. To be able to access we will have to go to Settings / About the Phone and press several times on “Compilation number”. At that time we will activate the “Development Options”, so we will have to enter to go to the indicated function.

Once inside we will have to go to the section “Pointer location” and activate the button. Now we will see some horizontal and vertical lines, which mark our journey on the phone, as well as precise lines for all the areas we touch. This allows us to accurately test all the touchpoints on our screen. If we see interruptions in the lines, we will know for sure that our screen is failing and where the fault is specifically.

Perform a calibration

This tool lets us know if our touch screen has a calibration problem. The most common symptoms are phantom touches, that is, touch commands are executed without having touched the screen, or more touch than we press. There are also delays in taps or they don’t even run. In this sense, calibration can help correct these failures. Just below we leave you with one of the best apps to carry out a quick and accurate calibration.