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Qualified Alternative – REWA iPhone 7 TM Screen
Mar 15th, 2017

Qualified Alternative – iPhone 7 TM Screen

The LCD screen can always be a fragile part compared with other parts within your phone. Once it’s cracked, you have no way but to repair it. With Apple support, you get an Original (OEM) LCD Screen with a high price. With a repair shop, you are most likely to get a China made LCD screen with a much lower price. Yes, because of the lack of iPhone original LCD screens, more and more independent repair shops have turn to China – the world’s factory for replacement parts. Tagged as less expensive than OEM products, China-made LCD screen stands for a potentially worthwhile choice.
Recently REWA has got some exclusive samples of the Tianma-made iPhone 7 LCD screen, did full tests with these samples and found some differences compared to OEM screens in the aspects of appearance, structure and function etc.
In following photos, the white color sample is Tianma-made, while black sample is OEM.

Dimensions
From the above test data, we can observe that the screen thickness parameter is different. Tianma-made screen is much higher than OEM screen. The reason given for it is that these two LCD screen structures are different.
Qualified Alternative – iPhone 7 TM Screen Dimensions

Home Button Hole
As for home button hole alignment, there are no differences between OEM screen and Tianma-made screen.
home button fitness -iPhone 7 TM Screen

Flex Cable
Also affected by the difference of structure, there are some differences between Tianma-made screen flex cable lines and OEM screen flex cable veins.
Left screen is OEM, right one is Tianma-made.

Structure
Tianma-made iPhone 7 LCD screen features with a conductive layer of ITO, while OEM screen is using In-cell program. And this also explains the increasing of screen thickness.

Hydrophobic Effect Comparison
Because of the difference of glass material and processing technology, OEM screen has higher hydrophobicity than Tianma-made screen, especially on N-hexane test.
The liquid on below Tianma screen are water, alcohol, and N-hexane.

Display Test
There are no obvious differences in the comparison of pixel resolution, saturation and brightness, except that Tianma-made screen’s color is cooler in color temperature.
Display Test Qualified Alternative – iPhone 7 TM Screen

Sunglass Polarizer Test
Regarding the concern to Polarizer  used in China-made LCD replacement for iPhone, REWA performed the Polarizer Test using iPhone Polarizer  Film and Polarizer Sunglass , ensuring higher experience especially when you are wearing sunglasses. There are no obvious difference between TM screen and OEM one in the test.
sunglass test -iPhone 7 TM Screen

Touch Sensitivity
For fingerprint testing, touch testing and 3D touch testing, there are no obvious differences. Tianma Screen functions well.
iPhone 7 TM Screen

Installation
When installing the LCD screen to iPhone 7 housing, OEM screen fits perfectly well while Tianma-made screen gets a very tiny gap.iPhone 7 TM Screen Installation
Aging Test
Both prove successful during the temperature and consumption test.
Aging Test in environment chamber-iPhone 7 TM Screen

Summary
From tests above we can see that thickness can be different due to the difference of structure, which also contributes to the difference of flex cables. Meanwhile, hydrophobicity on N-hexane test also proves unlike, not mention the installation gap of Tianma-made screen. However, Tianma-made screen may be relatively falling behind in laminating technology, it proves successful on display and touch function test. The truth is that they do differ from each other, but Tianma-made screen can also be a good replacement for OEM screen for those who want to cut repairing cost and get an affordable one.

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ONE - STOP ELECTRONICS AFTERMARKET SOLUTION