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: sales@futuresupplier.com.

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