Category Archives: Advices

New Tips to Try for iPhone 11 Volume Buttons Not Working

iPhone 11volume button

The volume buttons on your iPhone 11 won’t work and you don’t know why. In this article, we will explain what to do when your iPhone volume buttons are not working!

Basic RGB

If the volume buttons on your iPhone are not working,  it would be best to go to the Settings> General > accessibility and turn on the assistive touch. This option offers you control over the volume buttons, and by tapping on these options, you may have your volume buttons working fine.


If this trick not works, you may assume the problem is the internal flex cables.

First we need to know which flex cable is used to control the volume button and mute button. Yes, it is volume flex cable and WiFi flex cable.

volume flex cable and wifi flex cable

If there is a problem with your phone’s volume button or mute key, you need to judge two parts to determine where the problem is. There are three possibilities:
1. The WiFi flex cable needs to be replaced;
2. Need to change the volume flex cable;
3. Both cables need to be replaced.

Then if we find the problem, we can reduce unnecessary cable replacement and repair time during the repair process, and reduce repair costs.

iphone 11 rear housing

But how to judge whether it is the problem of the volume cable or WiFi flex cable?

iphone 11 teardown

The following is the detailed steps:

1. A Y-shaped screwdriver is needed to remove the fixing screw at the connection between the volume cable and the WiFi cable;

Y Screwdriver
2. Disconnect and take a new WiFi cable, after connecting, please connect it to the motherboard for testing. If the function is restored, the WiFi cable needs to be replaced;
3. If you connect the new WiFi cable and the problem is not resolved, then we need to use a new volume cable to connect to the original WiFi cable and test, if the function is restored, you need to replace the volume flex cable;
4. If the new volume cable can not solve the problem, both the volume and WiFi cable need to be replaced.
5. It is recommended to proceed according to the steps we said, so that the number of screws that need to be removed is the least and the most time-saving.

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No IC LCD Screen Solved the iPhone 12 Non-Genuine Display Warning Issue


Apple finally unveils the iOS 15 at WDWC 2021. New iOS update with new features but also comes with new problems, such as pop-up problem after replacing the lcd screens.

ios15 non genuine warning

The pop-up warning shows that unable to verify this iPhone has a genuine Apple display on the screen no matter the original display or aftermarket display. There is a touch module on the display flex which contains the iPhone 12 system data. When we connect a new replaced display and power on the phone, the touch module data and the iPhone system cannot match. That’s why the warning pop-up on the screen.We need to replace the touch module to the new display screen.

Our previous blog has already introduced that by replacing the touch screen Or LCD Screen, the pop-up problem can be solved.

Now we can offer No IC LCD Screens of iPhone 11 and iPhone 12 which can bring more convenience to customers. For specific operation methods, please refer to our video:

iphone 11 LCD with No IC

However, you need to pay special attention when replacing the No IC LCD Screen. After the touch IC is polished,the pad needs to be leveled. Otherwise, it is easy to cause false welding or short circuit.

Polish Touch IC

If you are a professional technician, you can polish the IC yourself to replace it, the operation is simple. Or you can provide the burst screens, type the number and send them to us, we change the burst screen IC to the new screen, type the number and send them back to you.

iPhone 11 broken lcd screen

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What Kind of LCD Screen is Your iPhone 11?

iphone 11

Nowadays, the supply of LCD screens on the market is uneven, and it is easy to dazzle people. How to distinguish between original and imitation and how to choose the most suitable LCD screen for your mobile phone is very important. Today, let’s take iPhone 11 as an example to give you a specific introduction.

At present, the supply of iPhone 11 LCD Screens in the market is mainly divided into three types: Original, OEM refurbished and High copy.

First of all, let’s take a look at the characteristics of the original quality.

How to tell if it is the original screen?

We can distinguish from the backlight code: Original New LCDs are supplied by LG, Sharp and Toshiba, and the brand of LCD must match that of the backlight. If the LCD and the backlight do not match, the screen’s touch function will cease to work approximately two days after repair.

The code of the LCD can be found on the back of the backlight (see below).

1. LG Code: DTP & C3F
2. Sharp Code: DHK & C01
3. Toshiba Code: C11 & F7C

original glass code

We can also tell from the QR code: The long code is Toshiba glass or Sharp glass, while the square is LG glass.

QR Code difference

These two are simple ways to distinguish the original LCD from the appearance.

Secondly, it is OEM refurbished quality.

Refurbished is divided into three types: Replacing the cover, Replacing the touch screen, and Replacing the flex cable.

1. Replacing the front cover: Only changing the front cover and frame. Other parts are still original;

2. Replacing the touch screen, there are 3 different situations;

1) Replace the original touch, only the cover and frame are imitated, the others are the original.
2) Change imitation touch; quality is divided into:  with grid and with frosted surface.

LCD With grid
3) Change the Polarizer Film; change the original or 1:1 imitation polarizer film which can go through the sunglasses, copy polarizer film, of course failed to through the sunglasses.

polarizer film Sunglass test

3. Replacing the flex cable also have 3 different situations:

1). Original flex cable:  original touch + original flex cable + imitation cover + imitation frame;
2). Imitation cable: imitation touch + imitation flex cable + imitation cover + imitation frame;
3). It can be matched according to customer’s quality requirements.

Original flex cable

The third is high copy quality.

It mainly includes In-cell LCD and TFT LCD.

Incell Technology make the LCD combined with Digitizer. That help to keep the Digitizer more safer inside of LCM. If the cell-phone glass been broken after dropping, the digitizer can still work well, and the Incell LCDs without Touch panel is thinner than LCDs with another piece of Touch Panel, it will be good for iPhone’s structure.

TFT LCD occupies the market of low-end models with its low price, but it has the disadvantages of hot screen and high power consumption.

incell TFT Difference

Anyway,through the comparison of the above three sources, we recommend using high copy and refurbished quality. These two sources are cheap in price, stable in function and strong in compatibility.

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