to discuss and learn more about how to replace or repair iphone parts.

Monday, June 24, 2019

Sintron iPhone Screen replacement - Why can't I use a New Home Button to have touch id function

Lots of customer would have questions like this:

Why the home button you provide can't work with touch id?

or Why don't you provide a home button with touch id ?


the answer is just easy, Apple iOS only allow one unique touch id to function, this is for Safety concern.

that's is to say, even you have another "Original" home button/ touch id ,they are still not interchangeable.

you can think of one situation, if the touch id is replaceable by others. nowadays, you would use your touch id to log in important app such as bank apps. if someone steal your iPhone, and they don't have your password and touch id / Fingerprint to unlock. but they can just replace a new touch id and make it to work. then steal money from your bank app by logging in from the "New" touch id. this is just a huge bug, isn't it ?

so now you understand "only" your original home button / touch id can work "only" with your iPhone.

hope this info helps.


Sunday, November 4, 2018

Dark Corner Issue

for Dark Corner. this usually happens when trying to connect LCD cables. but there's a misalignment. misalignment means not all pins got fitted in. so for some backlight parts it would be ok to turn on. but some might not.

in order to solve this, you need to remove all the cables and also must remove the battery clip to let it power off "completely". ( capacitor issue if you know some electronics)

and then connect them again. then it should work.

please check below video


Wednesday, September 20, 2017

How to Avoid damaging New iPhone LCD & Screen - by Sintron

after we sold over 10,000+ LCD & Screen .we had collected all the returns back from our customers .below are the pictures we were testing once again for the returned ones .we would analyze every one of them .and to make sure we understand every customer's concern and to have better quality & customer experience in the future .

we found that if the LCD & Screen didn't get cracked during logistics delivery . and you found item can't work after Warranty Check . over 90% possibility it is related with the issue of "Flex cable" or the "Plug"

1. so what are the problems with the "Flex cable" ?

for iPhone flex cable , it's very fragile and easy to get damaged . so the first thing you need to keep in mind is . NEVER EVER "PULL THE CABLE"

 below are the pictures of the "flex cable" and another is the "IC" for LCD & Screen .

When you got Sintron iPhone LCD & Screen .make sure you don't pull the cable at all .the cable is connecting the IC with LCD & Screen .once you pull it .it's possible to get detached from the Screen .there are many pins .the most possible situation is ,only a few pins got detached .so you would see the LCD is showing correct display .while some parts of touch screen might not work perfectly .this is possible because some pins (which is in charge of date transferring) already got detached . so only Parts of data can be transferred to communicate with IC .

2.How about the Plug ?

for new beginner ( no offense ,but sometimes expert too ) ,when you put back the plug .( see how to avoid damaging logic board ) ,try to notice not to have misalignment error and please check "how to remove and connect the cable notice" ,

the key point is , after you plug it in correctly and power on your iPhone .don't touch or move the cable at all . because the cable is sending date all the time even you don't use the screen . if you touch the cable even a little bit . it's possible to cause the touch screen not function correctly . so when you see the touch function is not good .don't judge too fast .please try to double check if the cable is fixed good in position .


Saturday, September 16, 2017

How to Avoid damaging your iPhone logic board

no matter what model of iPhone you are trying to DIY replacement .or what parts you are replacing ( most of time LCD & Screen ) .the first thing you need to do is to power it off .and that's just the basic step .(check Sintron iPhone instruction guide)

the important thing you need to know is ,even you already power it off .there's still some voltage on your iPhone .so any short circuit or contact during installation process is also possible to cause instant high voltage .which is possible to burn your logic board .and your iPhone would be useless at all .

as we might know .if this is your first time to replace the LCD & Screen .it's possible that you need to sacrifice a few LCD & Screens before you can get familiar with it (i mean for those they don't check our guide and blog carefully ,if you did check our every points ,there's a big chance you can get it done from beginning ) .Sacrificing a few LCD & Screen are find .they are not expensive .but if you burn your logic board .you would loss a lot !

so to be safe .please must remove the battery plug and also put an insulator between the plug and your logic board .then usually in this case . your iPhone would be very safe !


Monday, September 11, 2017

Fully Assembled -- Sintron iPhone LCD & Screen replacement

What is the difference Between Fully Assembled and normal iPhone LCD&Screen ?

Traditionally ,if your iPhone LCD/Screen got damaged .you need to replace the LCD/Screen .and during this process ,you have also need to transfer old parts such as camera ,earpiece etc...from old LCD/Screen to new ones . this takes quite much time to complete it .in addition .if you are new beginner ,over 90% possibility you might cause some damage to Screen ,Camera ,proximity sensor or even the logic board !

Sintron Fully Assembled LCD & Screen -- with All the parts Pre-Assembled together ,including front camera ,proximity sensor ,earpiece ,shield plate ,home button (some models) ,and the best parts is ,these parts are from original ! so they would work the same as your original iPhone .

below is the picture of fully assembled LCD/Screen ,you can see the difference with normal LCD/Screen. ( which you need to transfer old parts )


1.Should i choose this model for my iPhone ?

if you are new beginner ,and just would like to get your iPhone working again .i recommend you to use this one .a little bit more expensive (but still lots cheaper to go to shop .but save you much trouble . ( PS : most beginner would sacrifice a few Screens if using non-assembled Screen )

2.Am i able to complete this if i have no experience ?

     yes .possible .what you need is patience and check our instruction carefully ! then it's just plug off and plug on job if are you using this Pre-assembled LCD/Screen .

3.Why should i replace it by myself .

lots of our customer would purchase our normal LCD/Screen as material ,then go to DIY shop asking them to replace it .the fee for DIY shop is around $50 .however ,with this fully assembled one & our instruction together .you can save lots of fee instead of going to shop .we had made it much easier for beginner .


Sintron Fully Assembled iPhone LCD & Screen photos

Sintron Fully Assembled iPhone LCD & Screen photos

model : iPhone 5

model : iPhone 5C

model : iPhone 5S

model : iPhone 6

model : iPhone 6S


Sunday, September 3, 2017

Warranty Terms

When receiving our new products .please don't start transferring parts such as earpiece , camera ,home button right away . the first thing you need to do is to check the quality .

for quality check ,you can follow instruction steps until :Step : stage 1 test

before we send the products to our customer .we test each of them at least 3 times to make sure the LCD and touch screen is perfect .

according to our research .over 95% problems were caused during logistics problem (our responsibility ) or common mistake & installation error (customer's responsibility).

these should not be the quality problem. therefore we would like our customer to check the quality first before you start to install it.

if you find any problems for the quality check .please inform and CONTACT US first .we will be fully responsible for it .Warranty would be void for common mistakes & installation error (customer's responsibility).


1.if the quality check is ok ,and i remove the sticker then start to install it .after i install it .it shows some error situation "right away" .is this within Warranty .

A: not within Warranty .since quality check is ok .the error happened during installation process .

2.if quality check is ok .and install it also ok . but a few months later .there's some problem . the iPhone wasn't dropped or any external force . is this within Warranty .

A: yes . this is still within Warranty .




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Fully Assembled -- Sintron iPhone LCD & Screen replacement

What is the difference Between Fully Assembled and normal iPhone LCD&Screen  ? Traditionally ,if your iPhone LCD/Screen go...