Monthly Archives: December 2021

What You Need to Know When Replacing Samsung Galaxy S21/S21+ OLED Screen Assembly

samsung S21

The Samsung Galaxy S21 series represents the latest and greatest in non-foldable phones from the world’s biggest smartphone manufacturer.


It 6.2 inches (87.2% screen-to-body ratio) display features a dynamic AMOLED 2x screen that has corning gorilla glass. The benefit of the gorilla glass is that it can survive even after falling on hard surfaces from 1 meter or high without breaking the screen.

Confused old man looking at cellphone, new technology complicated for elderly

But the weather is unpredictable, when your samsung S21 OLED screen is accidentally broken, you still have to replace it with a new one.

Recently we received feedback from different customers, saying that after changing to a new screen, there was a problem of incompatibility.

Is this a problem with the OLED screen? Obviously, the answer is No.  Through the research and testing of our technicians, we found the problem.

We found that the front camera and the signal antenna are differentiated by version. But Samsung S21/S21+ series is universal. How to distinguish it?

First of all, we can distinguish from the appearance, As for front camera, “ULL” is the European version, “USQ” is the US version, if the version is wrong, the camera will not work.

Samsung s21 front camera

Then, Let’s see how to distinguish signal lines, “G991U/G996U” is the US version, “G991B/G996B” is the European version. If the signal cable version is wrong, it will affect the phone signal which may cause trouble to your use.

Samsung S21 Signal antenna cable

What you need to be aware of is that signal antenna fasten screw is triangle screw, a triangular screwdriver is required for operation.

triangle screw

Written at the end, when you need to buy a new Samsung S21 OLED assembly, you must first determine whether your mobile phone belongs to the US version or the European version, and then determine the corresponding spare parts, so that there will be no incompatibility problem after the replacement is completed.

If you have any more questions, please contact us:

How to Remove the Non-Genuine Battery Warning From iPhone XS to iPhone 13

Apple has encrypted the battery of iPhone XS and models above. Once you replace the battery, you will get the “Important Battery Message” and “Service” message. This makes our iPhone users feel bothered and annoyed.

iphone important battery message

To solve the problem, the latest solution has been verified. Today we will share solutions concerning iPhone XS and above models.

First of all, we will introduce the structure of the battery. The battery can be roughly divided into two parts – BMS board and battery cell. The original battery data is stored on the BMS board, it is connected with the battery flex cable. We need to replace the new battery BMS with the original one so that we can erase the warning.

structure of the battery.

Here is the detailed steps for replacing the BMS board.

First, Tear off the original battery bottom cover tape, separate and take out the BMS board.

Tear off the original battery bottom cover tape

Second, Disconnect the cathode and anode of the battery with a pair of scissors respectively.

second,Disconnect the cathode and anode of the battery with a pair of scissors

Third, After cutting, clean the remaining iron pieces on the BMS board, and polish the solder joints with sandpaper. Please do not break the flex cable.

Third, cleaning

Fourth, Clamp the new battery core and the flex cable on the aligning mold, the iron sheet of the new battery core is clamped in the middle of the iron sheet of the BMS board, and weld it with a special electric welding machine.

Fourth Clamp the new battery core and the flex cable on the aligning moldFourth weld it with a special electric welding machine.

The last step, after soldering, install the BMS board. apply the protection tape.

The last, apply the protection tape

After completing the above steps, install the battery and reassemble the iPhone, non-genuine battery warning disappear.


For more details, you can refer to our video:

What’s more, if you want to change the cycle count of the new battery, connect the battery to the specialized programmer(iPhone XS and iPhone 11/12 series are different). Battery data on the BMS board can be seen. Recalibrate the cycle times and battery efficiency can be done.

The final suggestion is that if you are not familiar with iPhone repair, please do not try the above steps. The whole process requires special machinery and equipment, especially professional technical craftsmanship.

Can iOS 15.2 RC Solve iPhone 11/12 Series Non-Genuine Screen Warning?

iOS15.2 RC Version

Apple today seeded the RC versions of upcoming iOS and iPadOS 15.2 updates to developers for testing purposes, less than a week after seeding the fourth betas and six weeks after the launch of iOS 15.1 and iPadOS 15.1.

Future Supplier has download the latest iOS 15.2 RC version, and tested whether the iPhone 11 and iPhone 12 series have pop-up problem after replacing the original and domestic LCDs.

iPhone 11 non-original display

The result was a bit beyond our expectations. The first time, we updated iPhone 11 Pro to the latest iOS 15.2 RC version. Both original and domestic LCDs will have “Important Display Message” pop-up prompts after the first restart. But there will be no such prompt when restarting again. Unfortunately you can see the prompts in your phone “Settings- General – About”, it will always shows “Display – Unknown Part”.

iPhone 11 pro pop up

Then we upgraded the iPhone 11 pro max and iPhone 12 series to the latest version, the result is the same.

iphone 11 pro max pop up

The official version of iOS 15.2 is expected to be launched on December 15th. We will continue to monitor further test results.

How Do I Know My iPhone Charging Port is Damaged?

iPhone 11 charging port

iPhone charging issues are common in even newly purchased phones. But, believe it or not, most of these occurrences do not necessarily need to be a substantial hardware issue; many charger port issues come from day-to-day activities.

The most common causes of phone charging ports damage are:

1. Humidity
If your phone gets wet or you keep it in the environment with a high humidity level, the charging port can be damaged by corrosion.
2. Dirt
Dust, debris, and dirt will block the contacts and prevent the port from working properly. Unless the piece of debris is big enough to cause serious damage, the problem can be solved by simple cleaning.
3. Mechanical damage
This is the most common reason for this kind of issue. It’s impossible to avoid this type of damage because it occurs every time you connect and remove the charging cord. The best thing you can do to prevent this problem is to move very carefully every time you need to charge the phone.


Don’t get too worried as even a seriously damaged charging port can be replaced.

So how to choose a suitable charging port for your iPhone? This is what we are going to analyze in detail today. Let’s take iPhone 11 as an example.

The quality on the market is mainly divided into the following categories:

1. 100% original new;

2. Original disassemble;

3. OEM refurbished

4. High Copy.

Next, we will analyze and compare one by one.

First is 100% original new quality.

As we all know, original quality works well and with good appearance, but unstable supply and high price are also the reality we have to face. Suitable for customers who have high requirements for quality and appearance.

Original new

Second is original disassemble quality.

It is not so beautiful in appearance and accessories need to be posted. But stable function and cheaper price than original new quality. Suitable for customers who have high requirements for quality but low in appearance.

oem disassemble

Third is OEM refurbished (original flex cable, ic components are soldered up).

Its main advantage is its low price, function and appearance are ok. But many components are post-soldered, the welding process is worse than the original one. What’s more, some may not be able to pass the RF test. Suitable for customers who have requirements for functions but not high requirements for signals.

oem refurbished

The last is high copy quality.

From the appearance, the IC is different from original, and the logo is not Apple but from a third-party manufacturer. The function is not stable and RF can not pass testing. Of course, the price is lower than other qualities. Suitable for low-end refurbished customers who only require normal functions and do not require signals.

high copy

Which quality to choose? Of course, your decision depends not only on the value, but also how long you intend to keep your iPhone. If you plan to hold on to it for a few more years, it’s cheaper to repair the charging port than to buy a new iPhone.

Any more questions, please contact us: