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Samsung Galaxy S4 모델 i9505는 13-megapixel 후면 카메라 및 5-inch 1080p 화면이 특징입니다.

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Touch screen unresponsive but lcd seems to be fine

Im repairing a cracked s4 screen. Removed logic board and everything else before removing the glass. All seemed to go ok and lcd boots up but not repsonding to touch at all.

I tried the glass free lcd in another s4 and its working fine so im wondering if its possibly a board problem?

Tried the board on another screen and no touch screen again.

Phone was in poer saving mode but ive hard reset it but still no touch. Is there any possible workarounds to testing the board etc to see if anything is damaged,ive put it up against the working board and cant see any difference.

Any ideas or pointers in right direction would be greatly appreciated

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Can i add that both the touch buttons work at the bottom, its the touch on the lcd that doesnt.

I hav the exact same problem but cannot find a fix

I also have an issue with the touch screen not working. I just replaced the lcd,glass and frame as a single unit. phone worked fine first night and next morning then all of a sudden no touch screen. Not dropped or wet. cannot figure out what is wrong.

might add that the last thing I did before I lost the touch was i disconnected the screen ribbon and I connected a different screen to my phone to see if the other screen worked. I was going to swap screens as mine had a crack even though it worked. I wonder if when I tried to connect the new screen I shorted the ribbon connection as I did not remove the battery. I realised that after I connected the new screen and it would not work

I went back to my own screen and then found that I lost touch function.

I rebooted the phone and when I got so far I had to reply to a question yes or no but as I had no touch function I was unable to reply and the phone is stuck at that position in the reboot process. Hope this gives someone an idea where the problem is.

I ended up buying a samsung with a broken screen for $20 and took the motherboard out and replaced it . Suddenly i had touch but no wifi. So bought a second broken screen samsung for $70. My phone now works and as a bonus I now have a GT-i19507 instead of a GT-i9505. I beleive its faster , but in anycase it is all working fine. Cost me $70 plus $20 total $90 for a working phone.It has frozen for no reason twice on me and I have had to restart it, otherwise I am happy. I now have two boards at home one has touch but no wifi and the other has wifi but not touch. Not sure what i can do with them.

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It would most likely be the best idea to just go out and buy a new LCD unit. Check the cables and make sure that is no rip in the cables for the LCD. It is most likely something has been snagged and ripped. Hope this helps Chad

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i have the same problem but this is a new part and nothing is ripped or torn.

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I now have the same problem with my s4. I was watching a movie on the android video player with the screen lock turned on. The phone shut itself down without warning and when I restarted it everything works bar touch. My first thought is that the screen lock function in Video Player is still on and im now unable to get back into the App to turn it off. Is this a possibility??

I have done all recovery mode options and what not. Im at a loss .

Any advice would be nice. Cheers

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Hello, buy the screen replenishment of an Iphone S4 because mine had fallen to the ground and the screen was damaged, not broken but only clear bars were seen darkening the image.

Change the same and it seems to work perfect, just that the Touch does not work, I can not unlock the phone because it does not allow me to slide my finger across the screen.

Check the connectors and they are neither dirty nor bent.

What could it be ?

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May posibilidad pa ba maayos ang s4 na ang sira ay LCD at touchscreen.. asap pls. respect my post

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