Tag: chinese screen

The screen is the most popular and top selling products in the repair market, and therefore, the quality varies. A stable supply chain is difficult to seek. Many suppliers provide clients with AA Grade Screens(mixed original and compatible materials and assembled by third-party factory) or S+ Grade Screens(original materials assembled by third-party factory) and pretend these are OEM Refurb Screens(glass-only replaced). What you bought is not what you think. Most customers can’t tell the difference from appearance or performance except a few experienced experts. REWA has summarized an effective way today to distinguish these screens for your reference.

FPC Area

OEM Refurb – the originally sealed glue is perfect in uniformity and brightness. It stays still after refurbishing and glitters at different angles.

S+ Grade – the same as OEM Refurb

AA Grade – the glue applied on the seam between the FPC on the back side and LCD is uneven and dark. Some even feature naked seam.

Bonding Area

OEM Refurb – the bonding area has not been cleaned thoroughly. There might be protective glue residue due to refurbishing or a thin and even layer of protective blue glue on the bonding area.

S+ Grade – OCA glue laminated with no glue residue.

AA Grade – the bonding area has been cleaned thoroughly before bonding. There is an uneven layer of protective blue glue left on the bonding area after the bonding process.

Conductive Silver Paste

OEM Refurb – the top two corners(left/right) are applied with glue to protect the conductive silver paste from oxidization.

S+ Grade – no glue applied on the two corners.

AA Grade – no glue applied on the two corners.

Backlight Solder Joints

OEM Refurb – the backlight solder joints most OEM Refurb screens are soldered by the original factory. They are perfect in uniformity, plumpness and cleanliness.

S+ Grade – the backlight solder joints are soldered by the 3rd-Party factory. They are poor in uniformity and cleanliness. It can also be clearly seen that the backlight has been replaced.

AA Grade – the backlight solder joints are soldered by the 3rd-Party factory. They are poor in uniformity and cleanliness. It can also be clearly seen that the backlight has been replaced.

We kindly suggest you combine all these points together to distinguish different quality grade screens. It’s pretty difficult to tell the difference based on one or two points. These screens perform almost the same in daily use. While OEM refurb screens are more stable and feature a low RMA rate. S+ Grade screens function stably. Touch and display of AA screens are not stable after a period of use together with a relatively high RMA rate.

For more detailed information, please contact your dedicated account manager. Choosing REWA helps you away from being cheated and therefore you can serve your customers in a more professional way!

Here is the latest news from REWA, iPhone XS Aftermarket Flexible and Rigid Screens are available now! Expecting?

Guess which two? As usual, REWA has got samples right the first time and conducted strict comparison tests. We are happy to share with you the test result.

• Rigid OLED
• OEM NEW
• Flexible OLED

Our comparison tests are mainly divided into Cosmetic Comparison, Structure Comparison, Function Comparison, Display Comparison and Aging & Vibration Comparison.

Let’s go Cosmetic Comparison first!

Bezel Adhesion: All fits well. The three differ in terms of color&texture of the display/touch FPC, material of the shield plate on bottom ICs, and the structure of bottom FPC.

Hydrophobic Effect

Water        good

Alcohol      good

N-hexane    good

Hydrophobic Effect

The three samples perform perfectly in the hydrophobic effect test.

Then it’s the Structure Comparison.

Dimensions

Thickness: Flexible OLED>Rigid OLED=OEM New Length: 141.2±0.1(mm). All normal size. Width: 68.6±0.1(mm). All normal size.

Dimensions

Installation: All screen fits well.

The third part is the Function Comparison. Function Test Normal touch functionality and 3D Touch of the three samples

Application

The three samples run smoothly. No frozen screen or unresponsive touch.

Operating Temperature Test

All going well.

Then let’s go to the Display Comparison Process.

Pure Color Screen Performance

Test Result: all perform perfectly

Brightness Test

Test Result: OEM New>Rigid OLED>Flexible OLED

Polarizer Test

Rigid OLED and OEM New perform perfectly.

Polarizer Test

Flexible OLED is black when held at a 45-degree angle.

The final is to check the stability of iPhone XS Aftermarket screen via aging and vibration test.

Aging TestStatic Cycle Test

Condition: -20℃/2Hrs, +55℃55%RH/2Hrs, +55℃/4Hrs Test whether the display performs normally or not

Dynamic Test

Condition: +45℃; playing video for 2Hrs Test whether the display performs normally or not

Vibrating Test

Amplitude: 2mm, Frequency: 70HZ, Time:1Hr

Vibrating Test[/caption] Function Test After Aging Test And Vibrating Test Normal display, touch functionality and 3D Touch of the three samples.

Conclusion

According to the test results of batch samples, both aftermarket rigid OLED screen and aftermarket flexible OLED screen of iPhone XS perform well. There are still small problems with the POL Test(Flexible Screen) and Brightness Test (Rigid Screen), but it doesn’t affect the normal use. For more information about iPhone XS aftermarket screens, please contact REWA account managers.