Touch screens have seriously expanded the functionality of mobile devices, but with the beginning of their use, the technology had to be treated more carefully. Almost any drop from a height exceeding 1 m can damage the main glass of the phone or even the matrix. Tempered glass is used to protect the screen, and the phone itself is often worn in a case.
In the current article, we will examine whether it is possible to replace glass on a smartphone and how to do it depending on the design of the display. We also consider the process of removing and gluing a protective glass, which will protect against the occurrence of more serious problems.
Smartphone display elements
Before studying the direct instructions, you should understand what modern displays used in most smartphones consist of. Their components include:
Matrix. a panel of liquid crystal or LED type, which contains an array of pixels that form the final image. A stainless steel case is located on the back side, and the front part is covered with thin glass. The design includes a loop connecting the screen to the board of the mobile device.
Touchscreen. a panel that is placed on top of the matrix and registers the user’s touch. Software tools combine the information received with the arrangement of elements on the screen and perform the corresponding action. When falling, it often takes a hit on itself, as a result of which it cracks. Replacing this element is cheaper than the matrix.
These components can be attached to each other in two ways:
Through the air gap. This simpler design, used earlier, implies easy replacement of glass without the use of special tools.
Without an air gap. the so-called OGS-display, which is a single unit, combining a matrix and a touchscreen. Replacement can be carried out independently, but takes more time and requires the use of special devices.
How to replace glass on a smartphone yourself
From the foregoing, it follows that the replacement is carried out by two different methods, depending on the type of connection of the matrix with the touchscreen.
OGS Screen Replacement
The separation of the two components in this case is a very complex process, which is carried out only in service centers, and not all of them. If you decide to change it yourself, it is better to purchase the OGS module assembly (along with the matrix).
In service centers, the following set of tools is used:
- stand for screen warming with preliminary fixation;
- thread for separating display elements;
- stencil. after placement in it, photopolymer glue is applied to the phone;
- UV lamp for bonding.
Without the presence of the specified equipment, it is rather difficult to carry out an operation to separate the elements and their bonding. Currently, this type of screen is used in most smartphones.
In general, replacing the touchscreen on the OGS-display is carried out in the following sequence:
Removing the SIM card and memory card, removing the back cover. If the cover is non-removable, it is necessary to tuck the case near the screen with a plastic object. A detailed disassembly of a specific model can be tried on YouTube or another hosting.
Removing the display module. The procedure involves heating the device with a hairdryer and pulling the part.
The matrix is cleaned of adhesive residues with a cleaner, then degreased.
The matrix is covered with a layer of glue and matched with a touchscreen. It is important to perform the comparison as accurately as possible, otherwise the sensor may not work correctly when skewed.
Dry the glue with a UV lamp. The process takes 10-30 minutes to cure the adhesive component.
This completes the procedure. In the case of the replacement of an integral module, it is enough just to disconnect the element and the wires that fit to it, then install the new one in the old place and connect it.
Replacement on screen with air gap
Now we will figure out how to replace the glass on a smartphone itself, whose screen has an air gap. In this case, the procedure is not so complicated and can be quite simply performed at home. This will save a decent amount. Before you begin, you must make sure that you have the following tools:
- small Phillips screwdrivers;
- plastic scraper (how to pry off elements);
Glass replacement is carried out in the following steps:
- The phone is disassembled.
- The screen is detached.
These are the two main methods of replacing the touchscreen on a smartphone on its own. And in order to avoid further damage, a protective glass is glued to the touch panel. We will analyze this procedure in more detail.
Do-it-yourself replacement of the protective glass on the smartphone
First of all, you will need to remove the old protective glass. Replacement is often carried out after it has been broken, so the procedure will be described from this position:
- On the glass is the most surviving corner, on which there are no signs of damage (usually farthest from the place of impact).
- A suction cup clings to this angle.
Carefully, between the screen and the protective glass, a plastic pick or similar thin object is inserted. Gradually, the pick is pushed further, and the suction cup reaches for itself. Often, after peeling off one edge, the glass can be easily separated by hand.
When performing the procedure, the most important thing is not to damage the main glass of the phone.
How to stick glass on a smartphone
Before starting the operation, make sure that in addition to the glass, all auxiliary tools are present:
- a lint-free napkin;
- rubber gloves (not necessary if you act carefully);
- special cleaner for alcohol-based glass.
Usually complete with a protective glass there is a wet towel soaked in a cleaner, and the second for wiping dry.
Bonding is performed as follows:
The smartphone screen is wiped with a cleaner wipe. It is important to go through all the corners, so that no specks, stains, fingerprints remain on the surface.
The first protective film is removed from the glass. on the side that is glued to the phone.
The glass moves to the screen and is matched with all the holes, and then lowered for gluing.
The protective glass, unlike the film, does not leave bubbles, but even if they have formed, it will be enough to hold it on the surface with a dry cloth towards the edge.
The procedure is completed, now the touchscreen is protected from external influences. In the event of a fall, the impact will take glass, which is easy to replace.
Following the recommendations presented, you will be able to independently change the main glass of the phone. The replacement procedure depends on the design of the screen. If there is an air gap, less tools will be needed, if not, more. To prevent damage to the touch panel, a protective glass is used in the future, self-adhesive sticker of which will not take much time.
Today we’ll talk about how to replace the broken touch glass on a smartphone or iPhone with your own hands. Also, step-by-step instructions for replacing glass on a smartphone of various models with visual photos ands will be considered.
Smartphones or iPhones often fall, glass, as the most fragile part, breaks in the first place. It would seem that there is no problem going to replace the glass on the phone, but in practice, everything turns out to be not so simple.
Previously, the glass on the smartphone changed separately, and the glass cost a penny. They are still inexpensive, but with the advent of the era of touchscreen smartphones or iPhones, the procedure for replacing glass has become much more complicated.
If you have a touch-screen phone and glass is broken on it, replacement is required, then you need to know the following:
Modern touchscreen smartphones or iPhones come in two types: those phones in which the sensor is connected to the glass, changing the glass accordingly, you change the sensor, and the cost of touch glasses is already much higher, since in addition to the glass itself, there is also a touch panel with a cable, which has a connector on the motherboard of the phone. Nevertheless, replacing the touch glass is not as expensive as the cost of replacing the glass itself on more expensive models.
The most advanced phone models, flagships of companies such as Iphone, Samsung, HTC, Nokia, Sony and others, have a more complex screen design: the phone screen consists of an LCD display, which actually transmits an image, a sensor (touchscreen), which is responsible for pressing, and glass, which is protective and decorative. At the same time, the screen module is solid, the components are glued together in an industrial way, and according to the manufacturer’s instructions, the screen changes completely.
Nevertheless, glass can still be changed. The procedure for replacing glass on smartphones or iPhones of top models is as follows: the display module is heated with a special hair dryer, the glue with which the glass is glued to the sensor, softened, then with a knife, a thin spatula, a plastic playing card, a special molybdenum wire and the like glass is disconnected from the screen. Then the remaining glue is removed using a special solvent, scraper, napkins, soft cloth, etc. New glass is placed either on double-sided tape or on special UV glue (similar to the factory one).
The description looks pretty simple, but in practice, everything is far from the case. Firstly, it is extremely difficult to achieve uniform heating of the surface of the display module, there is a danger of overheating the display and sensor, after which either the image will disappear or the sensor will not work correctly. This can occur both immediately and after some time.
Secondly, it is possible to remove the glass without problems only if there are one or two large cracks on the glass, in the case when there are cobwebs of small cracks on the glass, the glass will crumble and it is easy to damage the sensor with fragments, as a result, you still have to change display module as a whole.
Thirdly, cleaning the sensor of glue is also not good for a smartphone or iPhone, the glue is removed with a scraper, cloth, etc., the sensor is seriously affected, which can also lead to its failure.
And finally, in most cases, the masters put new glass on a double-sided tape pasted around the perimeter of the screen, it is impossible to ensure a snug fit of the new glass, dust will accumulate under it over time, and the adhesive tape itself can move away.
Not everyone knows how to put new glass on glue, not only special glue is required, preferably German, but also an ultraviolet lamp (the principle of hardening of the glue as in a dental office when a photopolymer seal is placed), and it is desirable to use special equipment under the display and glass to provide 100 % accurate hit of glass in its place.
Glass replacement work takes up to three hours, it is extremely painstaking and requires a very high qualification of the master. over, if something does not work out, then the master is also responsible for this, it is impossible to explain something to most clients. No guarantees can be given for a successful outcome of the operation.
The most common reason that the screen does not work is precisely mechanical damage. What just do not do with smartphones! They sit down, step on, put heavy bags, drop them from a height, throw them against the wall in a fit of anger. The list goes on. And if the owner of the smartphone likes to put it in the back pocket of jeans, this increases the likelihood that the screen will be crushed. In all these cases, replacing the display is the only way to bring your mobile friend back to life.
Another common problem: the smartphone fell into the water or was flooded with another liquid. If this happens, you need to show the smartphone to specialists as quickly as possible, since the liquid starts the oxidation process, and it can finally “ditch” your mobile. Only after its drying, cleaning and diagnostics will a verdict be established: is a screen replacement required or can it be repaired.
But not always the phone suffers from the hands of a sloppy owner. Here are some more common problems with smartphone screens:
The smartphone works, but only a white screen is visible. In this case, the following problems are possible: the controller on the board is faulty, the program has flown, the cable is damaged, or the display needs repair or replacement;
The screen glows in dark blue: problems with the controller or the display itself;
Ripples on the screen: you need to change the screen or troubleshoot the controller;
The image either disappears or reappears, or the image is distorted. its reason is a loop failure (a flexible part connecting the two halves of a mobile phone);
The screen works, but the picture is hard to see. In this case, the backlight has failed. Most likely, the backlight circuit is faulty.
Touch Screen Replacement
A touch-screen telephone is a very convenient and functional device. But the more complex the gadget, the greater the likelihood of damage. Touchscreen (touch screen) is the “Achilles heel” of modern mobile phones, because this part is constantly experiencing mechanical stress. Fragile glass can easily be crushed, broken, filled. Fortunately, replacing the touchscreen is a simple and time-saving procedure for the Mobilamaster service masters.
Remember: touch screens that do not work or are broken cannot be repaired! Replacement of the sensor or touch glass is required if:
it has one or more cracks;
the touchscreen has stopped responding to touches or is responding to them as he pleases;
Mobile phone freezes during touchscreen calibration.
The sensor has several active layers, and if at least one of them is broken, the touchscreen stops working. Often, if the touch screen does not respond to touch, you need to replace the glass, not the screen itself. Such “little blood” can be dispensed with when the image remains clear, the screen does not show darkening and spots. the touchscreen just does not respond to touch (this is possible on Nokia phones, iPhone, where in most cases everything changes separately, which means much cheaper than change the screen module assembly).
If the image has become blurry, fuzzy, not fully displayed, blackouts are visible or there are no pictures at all, a screen replacement will be required. The price of this service, accordingly, will be more expensive (how much a screen replacement costs depends on the phone model).
If the touchscreen does not work, do not try to repair the phone yourself, so that you do not have to buy a new mobile phone later. Replacement of the glass or the screen of the phone should take place in the workshop, using original parts, since Chinese fakes quickly fail, after which it is impossible to repair them. After replacing the sensor in the service center, you should be given a guarantee on the work performed and on the installed part.
When phone screen replacement is required
It is necessary to change the glass or the screen of the mobile if:
As a result of careless handling of the phone, the screen is broken. This results in cracks, a “cobweb” on the screen or a leak of liquid crystal (this substance is usually black, but in some models it is red). No matter how many cracks appear on the display, one or more. Screen replacements can not be avoided;
The display is “decorated” with stripes or the so-called “sun”;
Stains appeared on the screen. this usually happens after moisture gets into the phone.
Remember: it is impossible to repair a mechanically damaged screen! If everything is not so “lethal”, then in some cases you can do it with a repair, for example, in case of a malfunction of the loop, backlight circuit, or problems with the image controller.
Other problems may occur that do not require display replacement. For example, the screen does not show anything, but it is not damaged. In this case, the picture disappeared due to the display connector moving away from the board. Another “misfortune” is software crashes. This can be expressed in the disappearance of the image, but this problem is fixed by firmware.
Can I replace the smartphone screen myself?
If you always received only fives at labor lessons and have no doubt that your hands are growing from the right place, you can try changing the smartphone screen yourself. In addition to the new display, you will need a set of special screwdrivers. Special screwdrivers are needed so as not to damage the slots on the screws. Most likely, you won’t need a soldering iron. modern smartphone displays are not soldered, but are mounted on a cable.
Before changing the display, turn off the smartphone, remove the SIM card and battery from it. From the set of screwdrivers, choose the one that matches the slots on the screws of your smartphone. When working, it is best to use a step-by-step guide on how to replace the screen. tips can be found on the network.
Use the recommendations specific to your model, as there are significant differences in the methods of attaching parts of different smartphones and other nuances. For example, Nokia screen replacement will be significantly different from Samsung screen replacement.
When replacing the smartphone screen, be extremely careful, fold the screws and other details to a place where they cannot be accidentally brushed away with careless movement, write down what holes in the smartphone correspond to screws of one or another length.
Despite the fact that there are a large number of sites on the Internet that contain step-by-steps, photos and recommendations that help replace the smartphone’s display, you can’t guarantee that after such an initiative your mobile friend will not break down completely.
Therefore, if you are not one hundred percent sure of your strengths, it is best to turn to specialists. Replacing the touch glass, the screen will require some investment, but you can be sure that everything will be in order with your gadget! This is especially true for replacing the sensor in NTS smartphones. a qualified professional should do this.
How long does it take to replace a smartphone screen
Replacing the glass or screen of a smartphone is a common service that is carried out promptly in the workshop, often in the presence of the owners themselves. 30-50 minutes, and your phone will again serve you like new. Replacing the sensor with smartphones takes about 1-1.30 minutes.
Such promptness is another argument in favor of the fact that specially trained people should repair a smartphone. Even if you can replace the display yourself, most likely it will take a lot of time, because you will have to study the recommendations and materials, select parts, etc. And time, as they say, is money.
The displays of modern smartphones are very fragile, they crack and break literally after the first fall. This is due to the fact that the display is a complex part of the smartphone, made of glass and other fragile materials. Unfortunately, modern engineers still have not been able to solve this problem.
Users are prompted to stick additional safety glasses, covers and more. but this does not provide 100% protection. Therefore, replacing glass (screen) on a smartphone is a very common procedure. In this article, we will talk about what a touchscreen is, whether it is possible to change the display on your own and what problems the touchscreen has.
What is a touchscreen?
Touchscreen means “touch”. click and “screen”. screen. That is, this is the part of the screen in the smartphone that determines your clicks. The touchscreen is also called a sensor.
It is used only for recognition of clicks. If the touch screen doesn’t work in the gadget, or if they work involuntarily, then the touchscreen is broken. The quality of the image and the display of the image on the screen is occupied by the display, it should not be confused with a touchscreen.
What is the difference between a touchscreen and a display?
Touchscreen is the touch part responsible for recognizing clicks. The display is responsible for displaying information on the screen through the backlight pixels. In other words, we click on the touchscreen, and look at the display. These two devices work together and are located one on top of the other. Together, this design is usually called a screen and is protected by glass.
That is why cracked glass can damage the quality of touch recognition or picture quality on a smartphone. Sometimes badly broken glass damages the touchscreen and display.
How to replace the touchscreen?
If the touchpad does not work well or even refuses to accept clicks, it should be replaced. Fortunately, smartphones can be taken apart on their own. It is not necessary to change the device or its screen to fix the touchscreen, it is enough to separate it and change it to a new one. Fully replaced are engaged in service centers and equipment repair centers. There, they can easily repair a smartphone for an additional fee. It usually takes a couple of hours for the master and a couple of days for the client. The price varies from the type of device and the complexity of the work (from 5 to 350 per service).
Now the principle of screens without a layer, or the “sandwich” case, has become popular. In this case, the touchscreen, display and glass are glued together, completely glued together with a transparent sealant over the entire plane.
So-called “Lamination technology” done for several reasons.
- Firstly, such a screen has no interlayer and looks much better.
- Secondly, it takes up less space and makes the smartphone thinner and more comfortable.
If the smartphone has such a screen, then replacing only one part is impossible. In this case, you will have to change everything at once. This is usually the most expensive part in the device and is installed only in premium smartphones of famous brands. It is simple to check. the glued screen does not have a layer of air inside and looks very thin, and when pressed there is no jelly effect.
How to replace the touchscreen yourself?
If you want to save money, you can replace the touchscreen yourself. Please note that such actions require some knowledge and skill. It is not recommended to do this in case of doubt and the lack of specialized equipment. If something is not done according to the plan, then not only the smartphone screen can be taken out of standing, but also its board with the battery. in this case, the repair will cost about the cost of a new device.
If you have a new screen in your hands, you have the necessary equipment and enthusiasm, then you can start. To work you need: new display, hair dryer, screwdriver. First of all, turn off the smartphone and unscrew all the bolts on the frame (or open the back cover and unscrew everything there). Be sure to remember the location of the bolts, since they are different and will not fit not into their connectors.
Next, you need to gently shove a thin card or paper clip under the display. In order for this to turn out, the screen should be heated with a hairdryer and sprinkled with alcohol on it.
Slowly removing the display from the glue, you need to carefully lift it, but do not pull it out, since it is still on the loop. After successful removal, pull out the battery.
Then remove the protection on the loop. It is fastened with bolts and latches. It all depends on the model of the smartphone, it is better to see before disassembling your smartphone and repeat the steps from there.
After removing the display, you can take a new one and put it in the same position and in the same place.
Many devices have a function button and touch panels on the front. They will have to be removed from the old panel and put in a new one. This action is straightforward. You need to see what is missing on the new display and take the missing parts from the old one. After that, insert a new one into the smartphone and screw it in the same way as the old display.
After successfully connecting the loop, you need to check how the smartphone works. Turn it on and look at the reaction of the sensor. If everything is fine, then you can proceed to gluing the screen with the case. You can use any superglue, but you can’t remove it back. For smartphones, silicone glue is used. and it must be used. Such glue can later be easily peeled off by heating with a hairdryer.
Do not forget to fasten the bolts and attach the display to the case. After the actions taken, the touchscreen should work fine.
How to calibrate the touchscreen
Usually, after replacing the display, it is already calibrated and should work normally. However, there are situations when sensory clicks occur in the wrong place. This problem has several reasons: poor-quality replacement and damage to the modules, non-optimized software and a damaged cable on the plan.
Calibration is carried out programmatically through special applications on the smartphone. Apple devices on iOS are not calibrated, as they themselves do. If there are problems with the sensor on the iPhone or iPad, it is a matter of poor-quality replacement or damaged hardware elements. Also, before making a conclusion, it is worth rebooting the device. Also, the sensor may not work well due to extreme temperatures or moisture. In this case, you need to place the smartphone for a couple of hours (or rather a day) in a familiar and dry environment, such as a room. After a while, you can check the sensor.
On devices with the Android operating system, you can calibrate using programs such as Clinometer, TouchScreenTune or Power Bubble. After downloading one of these programs from Google Play, just open them and follow the instructions. Calibration takes only a couple of minutes.