1、 Why is the screen of an iPhone malfunctioning and jumping

1) The touch screen is broken (such as encountering greasy or magnetic environments).
2) The motherboard is leaking electricity. 3、 The battery is aging and damaged.

Generally speaking, the third possibility is the highest, and choosing to replace the battery can solve the problem of iPhone jumping.

2、 How to solve the malfunction and jumping of the iPhone 5s touch screen:

1) When users encounter screen malfunction while using their mobile phones, they can long press the home button while the screen is locked to enable voice control function. Then at this point, it is said that players can choose to play a song and then select the touch function to restore it. We can wait for a while and then we will find that the touchscreen issue has been fixed.


2) Users can also wait until their phone runs out of battery, and the phone will enter an automatic shutdown state. At this time, users can charge the phone and then restore touch screen operation after turning it on.

3) Users can connect their iPhone 5s to iTunes and upgrade their iPhone 5s to the latest version of the iOS system. (jailbroken users need to be aware that they cannot directly upgrade their iOS version on iTunes)

4) Users can also choose to double-click the home button, and then we will exit all programs running in the background, which is also a solution to screen failure.

5) Users can long press the power button on their phone and then hold down the home button to return to the home screen. This is also a solution to screen malfunction.




3、 IPhone 6/6 Plus touch screen malfunction? Solution to screen malfunction

1）. The first thing to do is to restart the iPhone and simultaneously press the "sleep/wake" button (also known as the power button) and the Home button until you see the Apple logo displayed on the screen.
2）. Some users solve this problem by selecting "Settings" - "General" - "Reset" - "Reset All Settings" in sequence. Users need to re-enter their password, change their wallpaper, and reset their Touch ID, but their data will not be deleted.


3）. Users who encountered iPhone 6/6 Plus touchscreen malfunction were able to solve the problem by restoring factory settings, but all information on the phone will be lost, so users need to back up important data in advance. Afterwards, users may need to set up their iPhone 6 like a new phone, and some users claim that restoring backed up data from iTunes or iCloud will cause this problem to occur again.
There are also some available methods that everyone can try:

——You can clean the screen with a slightly damp, lint free soft cloth.

——Do not use the device immediately while wearing gloves, when your hands are wet, or after applying hand cream.

——If you are using a phone case or plastic protective film or film on the display screen, try removing the screen protector and testing the device without them.


Open the "Map" application and double-click on each corner, then press the middle button to verify if it has zoomed in to each section.
If a certain area in other application software is affected, please note this location and try to verify the touch function of this location in the "Map" application software.


The main reason for Apple phones experiencing a situation similar to "touchscreen malfunction and jumping" is due to touchscreen malfunctions or low battery power, etc. Therefore, when we encounter this situation, the first thing we need to do is to determine the specific part of the problem based on our own judgment measures. Then, we can solve it by long pressing the power button or restarting the phone, and other basic steps. If we still cannot achieve normal use after trying this method, we can also seek help from professional maintenance personnel.

Comparison of Three Packaging Technologies


1. COG (Chip On Glass): This is one of the most traditional packaging methods, with low technical barriers and low costs, and is the most commonly used technology for screens. From the English version, it can also be seen that this packaging method involves placing IC chips and FPC cables on the back glass of the screen. However, due to the IC chip being located directly below the LCD, a considerable amount of screen space is squeezed, inevitably resulting in a "chin".




2. COF (Chip On Film): Essentially, it is an upgraded version of COG and a key factor in the current screen transformation. The main principle is to place the display driver IC chip into a flexible FPC cable, and then fold it under the screen using the characteristics of the FPC itself. Specifically, through hot pressing, the Gold Bump of the IC chip and the Inner Lead on the flexible substrate circuit will be bonded together. Due to the release of space occupied by IC chips, the lower frame width can generally be reduced by at least 1.5 millimeters.






3. COP (Chip On Pi): It belongs to the process with the most reduced borders, but it should be emphasized that the premise of this process is the application of flexible OLED screens, which utilize the bending characteristics of flexible OLEDs to bend all cables and ICs below the screen. Of course, OLED is also divided into two types: hard screens and flexible screens. To use this technology, a combination of COP packaging technology and flexible OLED must be used. However, this technology still has the disadvantages of high cost and low yield rate.





After introducing the technical foundations of COG, COF, and COP, let's take a look at the practical application of COP technology on Samsung S8. This phone adopts innovative COP screen packaging technology, which allows the screen edges to bend without physical limitations, achieving a nearly borderless visual effect. This technology not only enhances the aesthetic appearance of mobile phones, but also brings them a wider display space.

1、 What is OLED flexible straight screen?



To understand the difference between the two, one must first clarify what OLED is. Simply put, OLED uses a very thin organic material coating, which can achieve self illumination without the need for backlighting. It can be understood as OLED being composed of countless "small light bulbs". But whether it's a flexible screen or a hard screen, the materials used are the same. The main difference between them is the substrate material, which is the material supporting the OLED.



Flexible screens generally use PI and other flexible materials as substrate materials

Hard screens generally use hard materials such as glass as substrate materials



What exactly is a flexible straight screen? To put it bluntly, it's just about installing OLED flexible screens into straight screen phones.





2、 What are the benefits of using a flexible straight screen?



1. Due to the use of flexible materials as substrates, flexible screens have thinner screen thickness and lighter weight, which reduces the overall thickness, size, and weight of the phone. The thickness of mobile phones with large batteries/ultra fast charging like the K50 series is extremely terrifying, and using a hard screen will make the feel even more uncomfortable.



2. Due to its softness, flexible screens will have greater improvements in screen packaging technology. The use of COP packaging technology can make the black edge of the phone chin smaller, resulting in a better phone experience.



3. Flexible screens have a soft constitution, which can better protect the screen in the event of a phone falling or bending. In the event of damage to the external screen, a flexible screen can provide greater protection from the impact.

On Samsung OLED screens, rainbow patterns may appear on hard screens. However, many netizens have found that Samsung's flexible screen does not have this problem. This can also be considered a special place.





3、 Why didn't straight screen phones use flexible screens in the beginning?



To put it simply, it's still a matter of cost. In the past few years, the cost price of flexible screens was several times higher than that of hard screens, and COP packaging technology is also a high cost and low yield technology. In this way, the cost price will rise sharply.

Summary: The difference between mobile OLED flexible screens and hard screens lies in the substrate material used for the screen. And the flexible straight screen is actually to put the flexible screen into a straight screen phone for use. Flexible screens have thinner thickness, lighter weight, and better drop resistance. When choosing a mobile phone, it is better to choose a flexible screen.

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Don't panic, the first step in self-study is to "line out" the screen

'Screen out' often means that the internal screen is damaged, so it's better to do it yourself instead of wasting money. Taking S15Pro as an example, the entire screen replacement process is broken down into 7 key nodes, each step accompanied by real-life photos, and following along can save a lot of maintenance costs.

02
Removing the back cover: The glass material needs to be 'translated'

2.1 ◇ First, cut open the double-sided tape, and then lift the cover in parallel
Lightly scratch along the border with a thin card, loosen the double-sided tape completely, and then move it as a whole. Avoid breaking it hard at 90 °, otherwise the back cover will instantly break into a "puzzle".



2.2 ◇ Remove the protective cover and battery
After removing the back cover, unscrew all the fixing screws around the body without missing a single screw; After removing the protective cover, disconnect the battery and power off the motherboard to avoid short circuits during installation.

03
Take the small board: first disconnect the cable and then take the screw

3.1 ◇ Loosen the display cable and charging port
Gently loosen the speaker and display cable interface, and there is also a straight screw on the top of the small board. After removing it, all cables can be pulled out.

3.2 ◇ Remove the card tray and protect the red dust-proof adhesive
Use tweezers to grip the card holder and gently shake it out; Use a leaf shaped pick to lift the small red leather circle next to it to prevent it from hooking onto the wiring when disassembling the screen.

04
Dismantling old screen: Blade+8+1 combination method

4.1 ◇ Cut open the sealant and apply 8+1 drops of solubilizing aid
Stick the blade tightly around the screen, cut off the sealant first, and then drip a small amount of 8+1 solvent to soften the glue for easy separation.

4.2 ◇ Card stitching, slow work produces fine work
The nail is stuck in the gap, and the card is slowly pushed along the edge. After all the double-sided tape is scraped loose, the entire screen can be removed.

05
Clean up residual adhesive and apply UV glue, and apply sealant to the middle frame

5.1 ◇ Special UV double-sided adhesive for cranks is put into use
Clean up all the old adhesive on the middle frame, apply UV double-sided adhesive specifically for the crankshaft, and apply a circle of sealant around the edges. The amount should be small rather than large - if the adhesive seeps out, it will create bubbles on the new screen.

5.2 ◇ Installing a new screen: align first and then press down
After inserting the cable and aligning the top, gently press down to ensure that the double-sided tape is fully adhered to the middle frame; Push on the battery and perform a power on self-test. If the touch and display are normal, proceed to the next step.

06
Reinstall the small board: plug the charging port first

Before putting the small board back in, first insert the charging port into the hole and fix it, then fasten all the cables in sequence, and finally reinstall the battery - the appearance of the startup logo indicates that the hardware is ready.



07
Upper protective cover, rear cover, and sealant

7.1 ◇ Tighten all screws in place
The speaker, charging port, and small board screws have all been reset; Clean up the residual adhesive on the protective cover and back cover, and then apply special sealant.

7.2 ◇ Cover and flatten, installation completed
Align the back cover with the buckle and lightly press it to fit. If the fingerprint and power button rebound normally, it means the whole machine has been restored. Power on test of various functions, no "wires" on the screen, sensitive touch, normal sound - great success!