In this era when smartphones have become a necessity in our lives, a high-quality screen can indeed significantly improve the user experience. Faced with a wide range of screen types on the market, such as LCD, OLED, etc., how can we make a wise choice?


Analysis of mainstream screen types
‌1. LCD screen‌:
Light performance: using backlight technology, the light is uniform and soft, and there is basically no flicker problem
Eye protection advantage: especially suitable for users who are sensitive to the screen for long-term use
Service life: relatively long, low maintenance cost
Disadvantages: black display is not pure enough, and the overall power consumption is relatively high
2‌. OLED/AMOLED screen‌:
Display effect: strong color expression, high contrast, vivid picture
Functional features: support innovative technologies such as under-screen fingerprint
Energy consumption performance: more power-saving when displaying dark content
Usage suggestion: choose a model that supports DC dimming Can improve the flicker problem under low brightness



Key indicators for purchase

‌1. Resolution selection‌:
Basic needs: 1080P resolution can meet daily use
Advanced choice: If you pursue higher clarity, you can consider 2K or 4K screens
‌2. Refresh rate considerations‌:
Standard configuration: 60Hz refresh rate
Smooth experience: 90Hz or 120Hz can bring smoother operation experience
‌3. Brightness requirements‌:
Outdoor use: It is recommended to choose a high-brightness screen to ensure visibility in the sun



Master these purchase points, I believe that you will be able to find the screen configuration that best suits your needs the next time you change your phone. I don’t know what type of mobile phone screen you are using now? Are you satisfied with its performance?

01Overview of Screen Technology
◆ Basic structure of capacitive touch screen
In the evolution of touch screen technology, we have witnessed the competitive landscape from IPS, AMOLED, SLCD to OGS, while also witnessing the rise of In cell and n-cell technologies. In order to gain a deeper understanding of the three screen technologies of In Cell, On Cell, and OGS, we first need to analyze the basic structure of the screen. The structure of a capacitive touch screen is divided into three layers: the top layer is a glass cover plate, which is responsible for protecting the screen and transmitting tactile sensations; The middle layer is a capacitive touch layer, responsible for sensing and responding to touch signals; The bottom layer is the display panel, responsible for presenting images and colors.
The capacitive touch layer is composed of an ITO touch film layer and an ITO substrate. The display panel consists of an upper substrate, a liquid crystal layer, and a lower substrate from top to bottom. In the early days, frame pasting technology created a layer of air between the touch layer and the display panel, which affected the display effect. However, by using full lamination technology to eliminate this layer of air, the reflection problem of the screen has been significantly improved, making it more transparent when lit up and darker when turned off, eliminating the gray and white appearance.
Differences in Traditional Screen Structure
Traditional G/G and GFF screens both follow a similar structure: cover glass, touch layer, and display panel. But the difference in touch layer is the key to these two screens. Specifically, the structure of G/G and GFF screens is similar, with the main difference being the touch layer. The touch layer of G/G screens consists of one layer of ITO substrate and one layer of ITO touch film, while the touch layer of GFF screens consists of two layers of ITO substrate and two layers of ITO touch film (named ITO: X and ITO: Y respectively). Obviously, G/G screens have an advantage in thickness.

Comparison of Emerging Screen Technologies
Nowadays, OGS screens are favored by touch panel manufacturers, while In Cell and On Cell screens are highly regarded by display panel manufacturers such as Apple LG、 Samsung and Sharp, among others. Both of these screen structures have abandoned the traditional touch glass layer, thus achieving a thinner and lighter design. However, the key difference between the two lies in the integration position of the touch layer. Specifically, the OGS screen uses the same glass to achieve touch functionality; In Cell embeds the touch film layer into the display panel; On Cell places the touch film layer on top of the upper substrate. This difference affects screen design and performance.

02Comparison of In Cell, On Cell, and OGS
◆ Display effect differences
OGS screens perform better than In Cell and On Cell in terms of transparency and visual effects. Therefore, although well-known brands such as Apple and Samsung use In Cell screens, their simple screen transparency and visual effects are not superior to some domestic phones that use OGS screens.
◆ Lightweight and impact resistant
In terms of lightness and thinness, In Cell stands out with its lightweight and compact features. In Cell is the lightest and thinnest due to the integration of the touch layer into the display panel, which is also one of the reasons why iPhone can maintain its lightness and thinness even with a metal body. In contrast, OGS and On Cell are slightly inferior in terms of thinness. In terms of screen impact and drop resistance, On Cell performs the best, followed by OGS, while In Cell is relatively weaker. It is worth noting that OGS, by combining the cover glass with the touch layer, may weaken the strength of the glass during the processing, making the screen relatively fragile.

◆ Touch effect and technical complexity
OGS screens have higher sensitivity, while In Cell and On Cell interaction have lower sensitivity, but rely less on touch chips. High sensitivity may also bring problems, such as "screen jumping" phenomenon, which may be caused by fine dust, sweat or water vapor leading to misoperation of the touch screen. In contrast, in Cell screens directly integrate touch and liquid crystal layers, resulting in higher sensing noise and requiring specialized touch chips for filtering and correction. OGS and On Cell screens have relatively low dependence on touch chips.

Production cost and yield rate
From a technical perspective, the technical complexity of In Cell and On Cell is higher than OGS, and the difficulty of production control also increases accordingly, leading to an increase in manufacturing costs. In terms of yield, the initial production yield of In Cell screens was relatively low, which affected the supply of iPhone 5. But with the continuous technological investment and process improvement of manufacturers, In Cell technology was once affected by low yield rates, and now the yield rate has increased, approaching On Cell and OGS.

1、 External reasons


① Charger data cable


When charging with a non original charger data cable, the voltage is unstable, which can cause the screen to malfunction and jump. It is recommended to disconnect and replace the charger data cable.



② Screen protector film


Poor quality tempered film may affect the touch effect. It is recommended to tear off the film and check if the sensitivity is restored.



③ Water or dirt on hands



You can try wiping the screen of your phone with a tissue to remove any oil stains that may cause touch drift.



④ There is static electricity present


Static electricity on mobile phones can also be uncontrollable. In this case, you can lock the screen and charge the phone for ten minutes to solve the problem.



2、 System reasons


① Software issues


Determine whether it is a certain software or all software fixed area touch failure. If a single software is not sensitive in that area, it may be due to software issues. If all software has the same location touch failure, it is a screen problem and needs to be repaired.



② Too many backend software


Opening the software in the background is likely to cause the mobile phone to get too laggy, and the screen is not sensitive. Try to close the background running software.



③ System issues


If there are many applications installed on the mobile system and the phone configuration is not high, it is easy to cause insufficient phone resources, so this phenomenon may also occur. It is recommended that you try to restore the factory settings or flash the phone.



④ Crash or false crash


It can be resolved by turning off the screen or restarting the phone.



3、 Screen related reasons


Touch failure caused by the screen itself: such as dropping the phone, loosening the LCD screen cable after liquid ingress, and corrosion of the touch IC. These hardware damages can cause the screen to drift and touch failure.



How about it, have you learned how to judge?



It should be noted that the hardware failure of the screen itself involves the repair of internal parts of the phone, which cannot be repaired by an individual. It is necessary to seek professional maintenance personnel for repair and replacement. Do not disassemble or repair it yourself to avoid losses.

🔍 Quick diagnosis of fault types• Dynamic stripes: Color changes when the screen is lightly shaken/tilted, often due to poor cable contact (dropping/water ingress/aging models)Fixed stripes: colored vertical lines/black spots with fixed positions, which may be caused by liquid crystal layer rupture or screen burn-in• Touch abnormality: Striped area accompanied by broken touch/no response, be alert to cable breakage or touch layer damage
🛠️ Five minute self inspection processone ️ Physical inspectionLightly press the four corner border: If the stripes become lighter, it indicates loose wiring. You can use an alcohol swab to clean the gapsPure black wallpaper test: OLED burn-in displays fixed residual images, with clear linear physical damageExternal display verification: Connect the monitor through the acquisition card/docking station to distinguish between screen or motherboard faultstwo ️⃣ Scenario based judgmentSudden malfunction after use in low-temperature environment: temperature difference causes cable contractionStripe flicker during charging: prioritize troubleshooting power chips or data cablesPost game screen flickering: GPU overheating and high possibility of virtual soldering💡 Hierarchical solution▶ Cable contact issueEmergency response: Clean the eraser charging port, restart and observeThoroughly repaired: Professional disassembly and re insertion of ribbon cables (50-150 yuan), recommended full supervision throughout the process▶ Screen damage disposalLCD leakage: Edge color spot diffusion requires replacement of the assembly screen, priority should be given to official after-sales serviceOLED burn-in: Developer mode resets screen calibration to avoid long-term static high brightness images▶ Mainboard level malfunctionGPU virtual soldering: sent for repair within the warranty period, non warranty devices can try to use it with reduced frequencyAbnormal power chip: Replace MFi certified data cable and investigate charging module

1. Film application


If the phone screen is shattered without debris falling off, and the inner screen is intact, with only the outer screen damaged, it is possible to replace a non-transparent tempered film instead of repairing it. This film can cover the cracks on the outer screen of the phone screen and allow normal use. Such films are available online at a reasonable price.



II. Repair by mail



If the outer screen of a mobile phone is damaged but the inner screen is not, you can seek out repair services on online e-commerce platforms such as Taobao and Pinduoduo, and then mail the phone to the service provider for repair. This is relatively cost-effective, but the disadvantage is that the service provider may easily replace other parts or the entire phone. It is recommended to choose a shop with good reviews for repair by mail.



III. Offline maintenance



If the outer screen of the phone is severely damaged, with debris falling off, and the inner screen is also damaged, the only option is to replace the entire screen. You can go to a familiar offline repair shop for the replacement. Before going, search online for the price of a screen compatible with your phone, and then bargain. You can bargain in offline repairs, otherwise you may easily be ripped off.





IV. After-sales replacement



If you are not confident about replacing through other channels, you can directly call the official after-sales service phone number to obtain the phone number and address of the nearest official after-sales service outlet for replacement. It is important to note that after-sales service typically only provides replacements and does not offer repairs, and the prices are relatively high. If you do not mind whether it is an original screen or not, it is not recommended to replace it through after-sales service, unless it is free of charge.



Conclusion: The price of replacing a mobile phone screen varies based on different channels, and the cost and difficulty of replacement differ depending on the extent of screen damage. The four channels and methods mentioned in the article are listed in ascending order of cost. Users can choose the repair method that suits them best according to their actual situation.



In addition, it's worth noting that if your phone has been in use for a long time, replacing the screen may not be advisable. Moreover, some special types of screens, such as curved screens, can be particularly expensive. The repair cost can account for more than 30% of the price of a new model, making it unnecessary to repair.