With every new day, humanity makes more and more discoveries, develops, trying to reach new heights in any area of its life. One of these breakthrough phenomena can definitely be called a modern cell phone, which, in addition to many functions, also has a touch screen. Almost everyone has a smartphone, respectively, and life without it is quite difficult to imagine. Therefore, it is important to know how to care for it so that it lasts longer, but other than that, you need to understand what needs to be done to keep its touch screen in order. And this is important insofar as the display is the basic part of any phone. Since it provides a touch screen, in case of any problems, we can not only not see the contents of the software of our phone, but it is unlikely that we will be able to control it. This is exactly what will be discussed in today's article.
Modern phone: what is it?
In very rare cases, you can catch a person withoutyour smartphone or its accessories in everyday life. The answer to the question of why this is so is quite simple. Because modern phones literally can do everything and even more. Radio receivers, portable speakers and MP3 players, bulky cameras and cameras, massive and uncomfortable phones, ordinary stationary computers and many other equipment that the modern smartphone replaces, look like a gloomy past century against its background. This touch screen marvel may soon replace our real life! So what to do if something is wrong with this very screen? Let's think together.
Touchscreens "touchscreen" - what is it?
At its core, this is an input device adapted to our convenience. It can be said that the whole market is behind the touch screen phone, because it is convenient, beautiful and fashionable. Now consider how it works.
The touch screen display gives us the ability to interact with any device without special buttons, but only through sensors.
Entering any information using such a screen is carried out due to the special structure of the display, which is sensitive to touch. Where are they used?
Application
This technology is rightfully considered a real breakthrough, because it greatly simplifies all kinds of manipulations with electrical engineering. At the moment, they are simply the broadest application: from phones, as mentioned earlier, to modern TVs and terminals for making payments. Above allof this, a long-standing part is the touch screen for Samsung and iPhone, which, by the way, occupy a leading position in the modern technology market.
Screen classification
Since today, screens with sensors are very popular and, therefore, in demand, then, according to the principle "demand creates supply", they are trying to be introduced into almost every area related to technology. As a result, the methods and principles of their production, as well as models, can be classified into several different types. There are about four main types in total. If we consider various subtypes, then this figure increases many times. Let's look at the types of such screens: resistive; screens based on surface acoustic waves; infrared and capacitive.
Resistive screens
Just this type of screens is used in mobile devices, which will be discussed later. The structure of resistive screens is quite simple. It includes: the LCD display itself, as well as two transparent plates that will be installed above this display. Between such plates there is a dielectric layer. There are only two advantages of this type of screens: a rather low cost of components and, accordingly, of creation (in other words, the cost price) and good sensitivity.
Screens based on surface acoustic waves
The principle of operation of such screens is more complicated. It is based on the phenomenon of absorption of ultrasonic waves. The advantages of this type are that:
- Theydurable.
- Very transparent.
- They can determine not only the coordinates of the pressing point, but also the degree of this pressing. By the way, resistive screens were not able to do this.
But surface-acoustic screens also have disadvantages: the presence of even small vibrations and noises (meaning acoustic), as well as dirt, can contribute to disruption of the screen or its complete failure.
They are used, for example, in slot machines that have a large touch screen.
Infrared screens
This type of screen is based on a principle similar to the structure of surface-acoustic screens. The only difference is that infrared radiation is taken as the basis. The screen itself is represented by many infrared and mutually perpendicular lines. When the user touches the screen, the integrity of the radiation is broken at the touch point, and the device reads information about the coordinate location of this point. Advantages: the possibility of convenient reconstruction, strength and durability. Application: vending machines.
Capacitive screens
When you press the surface of such a screen, a current pulse is generated at the touch point, due to which the device reads information about the touch and its coordinates. The advantages of capacitive screens include a very fast response time and high performance. Disadvantage: close dependence on external temperature, due to which it can involuntarily stop itswork. Application: ATM terminals, Apple touch products.
The touch screen does not work. What to do?
The biggest problem in this situation is the fact that for most modern mobile devices, the touchscreen display is the only means of interacting with the device. Of course, in the event of a sensor failure, the entire performance of such a device goes to zero. The question naturally arises, why does the touch screen stop working?
There can be many answers to such a question: both a banal breakdown, and contamination of the sensor or microcircuits, and the ingress of water or some other substance into the layer between the display and the film. But with all the variety of problems, do not despair: there is always a way out. We will show you some simple first aid methods for your smartphone.
Basic and simplest troubleshooting steps
The first thing you can try to do with a broken smartphone yourself is to follow these steps:
- Turn off your device.
- Remove protective cover or film.
- Gently wipe the screen with a lint-free cloth and make sure it is clean and dry, otherwise this will cause the problem.
- Reboot the device and try to use it with clean and dry hands.
Important: Always use a dry or slightly damp screen cloth,but never take it wet!
Probably the most basic screen troubleshooting tip. If the damage in the software is not serious or the contamination is superficial, then this will be enough. If this did not help you, do not rush to carry your smartphone to the service center and pay a lot of money for fixing. Please read this article until the end.
Troubleshooting steps for a non-responsive screen
If you are sure that your screen stopped responding to touch and movement, not due to any impact (for example, falling) or getting water into it, then the following steps should help for sure:
- Clean and dry your hands thoroughly.
- After turning off the smartphone and removing the protective devices, make sure that the screen and the protective film remain intact and clean. Otherwise, you will need to wipe off any dirt and liquids from the screen surface and screen protector with a dry, lint-free cloth.
- Remove all peripheral devices (SIM cards, USB cable, various adapters, etc.).
- If the screen is completely insensitive, you will have to go to the step of forced rebooting the device. For an Android device, it will look like this: simultaneously hold down the "Power" keys (usually located on the sidebar on the right) and "Volume Down" for 7-10 seconds. For users of Apple products, you will have to use a slightly different instruction, depending on the versions of your device. For iPhone 6 users: hold down the "Power" and"Home" until the appearance of the "apple" on the screen. For users of iPhone version 7 and higher, the following instruction may work: hold down the "Power" and "Volume down" keys also until the logo appears.
- After a successful reboot of the device, check the functionality of its sensors.
What should I do if my phone is dropped on a hard and/or wet surface? In this case, the screen of your device stops responding due to an internal malfunction. However, even in this case, you can try to bring it to its senses and make it work again without the help of service centers. Of course, this is possible if the damage is not very serious and you are confident in what you are doing. If you are afraid of doing something wrong, then it is better to leave this matter to professionals without resorting to any of the above steps. So let's get started.
When the touch screen stops functioning after the phone is dropped, it may be due to a problem in the connection of the device that digitizes external signals. In this case, you can tap gently on each corner of the phone, which may cause the connection to reconnect.
If the phone fell not on a hard surface, but in a liquid (usually water), then in order to return it to functioning, you must urgently perform the following steps:
- Turn off the phone and remove the battery.
- Wipe off the water with a dry lint cloth.
- Try to remove water from the phone connectors (microphone, speaker, headphone jack and charger).
- Put the phone down with a drying agent around it.
- Leave the smartphone for a long time (at least 48 hours).
It is worth noting that often people use rice as a drying agent, although it is not. Silica gel, for example, is perfect for this.
You should understand that you can solve the problem of a non-working screen at home only in cases where the problem is not so serious that the need for specialist help is visible to the naked eye. If none of our methods solve the problem, it means that the damage to the screen or software is very serious. As a rule, such serious problems are quite difficult to understand and fix on your own, and you cannot do without the help of a professional, because you may need to change the touch screen. In this case, there can be only one advice: contact the service center.
