Monthly Archives: July 2016

You Are Out If You Still Do Not Know Pre-installed Frame

With the popularization of iPhone 6, more and more problems are brought to our attention, such as loose frame, frame and lcd are separated,bad backlight and bubbles, black spots and dust etc. Many people are willing to repair instead of buying a new phone. However, most of repair shops adopt hot melt glue technology when repairing which appears degumming, cracking and excessive glue problems.

As following:

loose frame

Those questions come up more and more frequently. Repeated back repair not only waste time, but affect the performance of phone.

To solve these questions, the pre-installed frame for iPhone 6 series appears.

iPhone 6 plus glass lens with frame

First, let’s know about the component and definition:

The pre-installed frame is consist of two parts: frame and glass cover. Via cold glue technology, apply glue on the frame and glue it to the glass lens.

iPhone 6 lcd with pre-installed frame


1. Pre-installed glass cover with frame can keep viscidity to avoid frame from come off and flexible. It adopts cold glue bonding technology strictly according to original factory, glue the frame to the glass cover. Cold glue has the advantage of stable physical properties, once glue well, you need not worry about come off under minus 60℃.

2. Omit procedure, reduce risks and save costs: pre-installed technology achieves laminating  frame with screen directly, omits the process of gluing lcd with glass cover and frame respectively. But traditional laminating technology need fit twice which adds damage rate of screen.(Note: The lcd screen is fragile and easy to damage)

3. Easy and Convenient Operation, No need vacuum laminating.

Traditional way for LCD laminating need two-step: vacuum laminating frame & glass lens separately, this process is cumbersome and often prolonged. While pre-installed frame just need laminate screen with lcd laminate mould which is easy to operate and convenient to process. (Note: we have 5.5 inches/4.7 inches/4.0 inches/3.5 inches mould which is compatible with corresponding size )

lcd laminating mould

The lcd screen with pre-installed frame is not easy to appear degumming, cracking and excessive glue. The lcd adopts traditional technology using hot melt glue, the physical property is unstable which changes with the surroundings temperature and easy to excessive glue during the process of laminating. Cleanup process is cumbersome and facile to crack,however, cold glue technology will not have those problems.

Everything has the advantage and the disadvantage just as a coin has two sides. The pre-installed frame has the advantages as above, we should recognize its disadvantages too.

1. Because of stable physical property and strong viscous, once gluing together, it is difficult to disassemble, even professional equipment can not ensure high success rate.

2. During the process of disassemble, the lcd is easy to be damaged, refurbishing is difficult.

3. Not easy to repair: once the screen is broken, you need replace a new screen or change a new phone.

All in all, Pre-installed frame can solve degumming, cracking and excessive glue etc.problems. The cold glue technology is also mature and the supply is stable, why not give it a try?

Note: If you are interested in pre-installed frame, we have good news for you: purchase above 100pcs glass lens with frame,you can receive free adjustable LCD laminating mould as gift.


What Cause iPhone 6 Plus Screen Flicker & Bad Touch

iPhone 6 plus lcd

When replace a new iPhone 6 plus screen, those problems occurred frequently:

1. No touch function  during the process of LCD testing or finished installing.

2. The screen flickers by slightly touching, then without touch function.

iPhone 6 plus Flash screen

3. In a few days, the new replaced screen can not work any more.

crazy for the screenjpg

Usually we regard them as the matter of LCD screen, and replace a new lcd to solve those problems, but bad touch happens again. Through uninterruptedly attempting, we find it is the problem of touch IC. Replace a new lcd screen can not solve the problem fundamentally.

iPhone 6 plus lcd

Why it is the problem of touch IC? Let’s see how it works firstly.


Touch screen is a kind of induction type LCD Display device which can receive contact etc input signal, When contacting a graphical on-screen buttons, haptic feedback system can drive a variety of on-screen coupling device according to a pre -programmed program which can be used to replace the mechanical button panel , and by the LCD screen to create a vivid video effect .

To put it simply, when we touch one point of the screen , touch sensor will collect the according location data and transmit it to touch ic for integration , then touch IC convert the message into display information and transmit to display IC, finally display IC turned the information into corresponding pictures for displaying or changing.

The above three phenomena occur are due to touch sensor can not transmit the received information to display IC, so we can judge it is the problem of touch IC.

Then how to work it out?

1). Find U2402 touch IC and dismantle.


2).Test the resistance of U2402, and find M1 has no resistance.

resistance u2402

3).Fly line from M1 to one part of U2403  (Note: In practice, flying line is the essential step for screen flicker and bad touch).

fly line

4).Reinstall U2402 touch IC

reinstall u2402

5). Install and test whether it works after cooling.


In general, bad touch and screen flicker are supposed to the problem of lcd screen, then how to simple judge the problems? When we fall into the situation of bad touch, we can test several lcds with the same mainboard, or choose a good lcd for testing, then you can decide which part goes wrong.

replace with two lcd

For more details, you can click here:

Believe it: iPhone 6 Can Convert into iPhone 6S

Rumors about iPhone 7 are not fresh now, While iPhone 6 screen can convert into iPhone 6S, you believe or not? Let’s check how to achieve and test the function:

iPhone 6 to iPhone 6s

First, you should know the parts need to be changed:
1). Replace iPhone 6 flex cable by iPhone 6S.
2). Separate the LCD of iPhone 6, then laminate the iPhone 6S LCD via vacuum laminating machine.

Detailed Steps:

1. Separate the iPhone 6 LCD and glass cover by professional cutting machine.

screen separator

(Notes: the glass cover of iPhone 6 is compatible with iPhone 6S, please handle gently to avoid damaging the LCD which may cause backlight problem)

2. Remove the glue pasted on the iPhone 6 glass cover with glue remove machine, then disassemble the flex cable, after that, replace it with iPhone 6S flex cable.
glue remove machine

3. Laminate iPhone 6S flex cable by professional laminating machine. After doing this, we have finished iPhone 6S touch flex cable with glass cover.


(Note: this operation needs to wear gloves)

4. Laminating the function well iPhone 6S LCD and touch flex cable with glass cover. vacuum laminating

(Notes: this procedure must be finished strictly under guide and it needs patience and skills, take care when taking up and putting down, or the LCD will drop off and break easily).

5. After Applying LCD adhesive,OCA and screen protector, iPhone 6S LCD screen assembly has been finished, whether it is quality approved? testing is indispensable.


6. Make a regular test to the final LCD screen, mainly for 3D touch and backlight.

touch test)

7.If it works well, install the frame finally.

Till now all the procedures have been finished and iPhone 6 LCD screen has converted into iPhone 6S screen successfully.

iPhone 6 TO 6s conver

From the above steps, we witness the processing of converting iPhone 6 LCD into iPhone 6S. Except for professional technology and machine, patience and carefulness are also important.

5 Shocking Secrets You Never Know About iPhone 6

Now iPhone 6 lcd is divided into 2 types: OEM LCD and OEM-compliant LCD.

The following price for all kinds of iPhone 6 screens is based on A stock of the product itself.

iPhone 6 secret

一. OEM stock for iPhone 6 lcd originates from Sharp, Toshiba and LG manufacturer, price ranges from $110 to $120.

Replacement Part for Apple iPhone 6 LCD Screen and Digitizer Assembly with Frame - White - A Grade (1.)


1). Screens are offered from original manufacturers.

2). All assembly components are original.

3). The supply for iPhone 6 screens are not stable, and it’s basically short of supply which only possess market share less than 0.1%.

4). iPhone 6 screens can be categorized as three quality standards(A/B/C) and the price fluctuates accordingly.

A stock ranges from $110 to $ 120, $70 to $90 is for B stock and $50 to $60 is for C stock.

二. iPhone 6 OEM lcd with OEM-compliant glasses: lcd is from Sharp, Toshiba, LG manufacturers, price ranges from $70 to $90.

Replacement Part for Apple iPhone 6 LCD Screen and Digitizer Assembly with Frame - Black - A Grade (3.)


1).The stock supply is from refurbishing factory where broken glasses are re-manufactured.

2). Both lcd and flex are original, the glass and other components are OEM-compliant.

3).Due to the influence of recycling used screens, the supply for iPhone 6 lcd is relatively stable, and the market share is 20%.

4). According to different quality standards, A stock ranges from $70 to $90, $60-$65 is for B stock and $45-$55 is for C stock.

三. iPhone 6 OEM lcd with OEM-compliant flex, price is $55-$65.

OEM Apple iPhone 6 LCD Screen and Digitizer Assembly with Frame - White (2)


1). The supply comes from unauthorized workshop or refurbishing factory.

2). OEM lcd, while glass and flex are both OEM-compliant.

3). Long term stability for the supply, market share is 40%.

4). Prices for three different quality standards, $55-65 is for A stock, $50-$55 is for B stock and $45-$50 is for C stock.

四. iPhone 6 with OEM Sharp LCD, but with OEM-compliant touch, price is $35-$40

OEM Apple iPhone 6 LCD Screen and Digitizer Assembly with Frame - White (1)


1). The supply comes from unauthorized workshop or refurbishing factory.

2). On-cell craft, only lcd and is OEM, other assembly components are OEM-compliant.
3). Stock from retooling which has long-term supply, market share is 30%.
4).Three-level standard: $35-$40 for A stock,$30-$35 for B stock and $28-$30 for C stock

五. iPhone 6 copy lcd from Tianma, LT, JDF, JDB, Shenchao , price is $20-$35.

OEM Apple iPhone 6 (4.7-inch) LCD Screen and Digitizer Assembly with Frame - Black (3)


1).The supply comes from workshop.

2). Retooling mold for iPhone 6 lcd and flex with stable performance and mature technology.

3). Long-term supply for retooling mold lcd, and market share is 50%.

4). Three different quality standards are:  A stock($30-$35), B stock($25-$30) and C stock($20-$25).

How to distinguish OEM and OEM-Compliant LCD Screen:

Glass comparision_
Tianma, LT, JDF OEM-compliant LCD screen: grid can be seen on the display screen once you use the Flashlight to check, while OEM will not.

How to distinguish OEM and OEM-Compliant Flex cable:

flex comparision

1.Original flex has Apple logo, while Tianma, LT, JDF flex cable has none.

2.Users can feel that the touch for OEM LCD and flex cable is very sensitive, while it takes 1-2 weeks to appear touch delay if using copy flex cable.

3. OEM flex cable will not getting hot even using 5 hours, but China flex cable does in 1-2 hours, this is because of the quality of flex cable.

How to distinguish OEM and OEM-Compliant Frame:

frame comparision

1.OEM frame has no gap visually, and installed performance can reach perfectly to 1:1, while OEM-Compliant frame with bad glue which easily to come apart and fall off.
2. OEM-Compliant frame is easy to have gap when installing, while OEM frame has no such appearance.

All in all, various quality and manufacturer make the price of iPhone 6 LCD screen variant.