Touch issues after 7 plus screen install replacement

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iPhone 7 Plus

2016年9月16日发售。型号有A1661，A1784和A1785，支持GSM 和 CDMA 格式，存储容量有32GB、128GB以及256GB，颜色有玫瑰金、金色、银色、黑色、新的亮黑和红色。

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FixNcell Phone Repair @fixncell

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发帖于: 2017年4月27日

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Touch issues after 7 plus screen install replacement

So I had this happen today with two installation attempts with two different phones and two different replacement screens. I'm putting a new screen on an iPhone 7 Plus and the screen tests fine prior to install, yet when it's fully inserted into the frame, the touch screen functionality goes erratic and is basically non-usable. The second screen I was dealing was SUPPOSED to be OEM quality (I'm having my doubts on that supplier) so I was really surprised to have any issues. I had the chance to tinker with that one a lot more than the first and the different was obvious, the screen is fully connected and everything installed on the back of it and it tests totally fine while it's outside of the frame. But as soon as it goes in all the way, it's worthless. Now, this guy, and the first, now that I think of it, had some rather significant bends in their frames that I couldn't straighten out completely. However, the original screens, once reinstalled, worked just fine so perhaps it's just an issue with some of the aftermarket screens being rather finicky. I should note that 3d touch was turned off.

Does anyone know if this is somehow to the installation of the new screens? At any rate, it's extremely frustrating only having an issue flare up once you're all the way through the repair.

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Quick question, was your screen by any chance a white one?

由 uBreakIt iRepairIt 完成的 2018年4月24日

Yes im having several issues w/ a white iPhone 7+! The sounds not working n we tried turning speaker box around thinking it was upside dwn, nope, camera is only wrk'g forward, cant take selfies, n the home button wont wrk, any help wld b SUPER appreciated. Thanks, Nina.

由 Nina Baker 完成的 2018年9月28日

What type of repair was done prior to the issues? Not sure why the speaker was touched if it was a screen repair.

由 uBreakIt iRepairIt 完成的 2018年9月28日

Generic screens are cancer to iPhones.

由 applerepairshop 完成的 2018年10月11日

For a screen repair, the earpiece speaker has to be touched and swapped into the new one.

由 Bus Livin 完成的 2019年6月14日

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iMedic @theimedic

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发帖于: 2017年4月29日

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Dude, you got bunk displays. And nobody has oem. You think Foxconn is gonna double cross apple? You think Chinese suppliers with "oem +++" parts got your back? The only thing they got is your wallet. See if you can get a refund. Then either buy from iFixit, or source reliable retailers, with a good warranty program. You get what you pay for

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@theimedic "Touch Issues" ? Home button pairing?

由 mayer 完成的 2017年5月1日

@mayer whaaaaat?

由 iMedic 完成的 2017年5月1日

having same issue with screen purchased form fixit.

由 Jake Flippin 完成的 2017年7月4日

@jacobcecilflip then hit up iFixit. They got an AMAZING warranty program. I would do email

http://help.ifixit.com/article/136-email...

100% of the time they handle their warranty. If it's on your end though, don't get upset

由 iMedic 完成的 2017年7月7日

Javidzed is correct. Most issues are due to misalignment with the ribbon cable.

由 chris 完成的 2017年12月5日

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Yes im having several issues w/ a white iPhone 7+! The sounds not working n we tried turning speaker box around thinking it was upside dwn, nope, camera is only wrk'g forward, cant take selfies, n the home button wont wrk, any help wld b SUPER appreciated. Thanks, Nina. — Nina Baker
What type of repair was done prior to the issues? Not sure why the speaker was touched if it was a screen repair. — uBreakIt iRepairIt
For a screen repair, the earpiece speaker has to be touched and swapped into the new one. — Bus Livin
@jacobcecilflip then hit up iFixit. They got an AMAZING warranty program. I would do email

http://help.ifixit.com/article/136-email...

100% of the time they handle their warranty. If it's on your end though, don't get upset — iMedic
Javidzed is correct. Most issues are due to misalignment with the ribbon cable. — chris

Stein Olaf Lund @steini777 声誉积分: 73 2 1 · Answer 1 · 2018-07-19T08:14:55-07:00

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Stein Olaf Lund @steini777

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发帖于: 2018年7月19日

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This is the solution that worked for me on an iPhone 7. I had the exact same problem. The touch worked fine outside of the frame, but stopped working as soon as I clicked it in place.

I found out that if I took some transparent 3M tape over the LCD/touch connectors as shown in the picture, it worked fine when installed

Not sure if this works for the iPhone 7 plus though

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I'm assuming from what I seen in that picture, you didn't transfer over the stock black tape that goes around the 3D touch IC chip? Now that I'm looking at this picture, I'm beginning to wonder if these touch related issues have anything to do with the 3D touch chip grounding out on the metal plate that covers the connectors as well as the housing.

由 uBreakIt iRepairIt 完成的 2018年7月19日

@ubreakitirepair I like how you think. I was wondering the same possible cause. Next iPhone 7 I have a screen change on, I'm going to try that. If I feel dareing enough to remove that black tape. I normally just oral it back a bit, because it aligns the 3D touch chip perfectly.

由 Joseph Hughes 完成的 2018年7月19日

I don't think the iPhone 7 comes with any black tape on the touch IC chip. Only for iPhone 7 plus. I didn't see it when I replace this LCD. I tried to double check on several toturials on YouTube, and I didn't see it there either.

Anyways, looks like the non-original LCD's sometimes causes some grounding problem unless the IC chip isolated with tape

由 Stein Olaf Lund 完成的 2018年7月21日

Thank you, it works for me.

由 Oliver Tran 完成的 2018年12月11日

Tried on iPhone 7 Plus......and it worked!!!

I made it look identical to the photo, and bam!

由 Daniel 完成的 2019年1月9日

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Adam Martinkus @adamsaab 声誉积分: 49 1 · Answer 2 · 2018-11-04T13:47:10-07:00

Adam Martinkus @adamsaab

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I had problems with my IPhone 7 plus after I replaced the lcd on it, it lost sound to it, phone lost its all of its vibrating functions, volume buttons stop working but worked to take a picture, front camera stoped working, etc… I taped the &&^&@@ out of everything and it solved all the mentioned issues took me some time to release so sharing this info to possibly save someone time, kindly Adam

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Javidzed @javid_zare_s 声誉积分: 381 5 · Answer 3 · 2017-04-28T03:34:21-07:00

Javidzed @javid_zare_s

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Investigate the ribben cable for naked cupper and use elec. tape on that area

Or use sth on top of connector for making sure they are in place

Third ask for refund and buy sth with garantee

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Thanks for the info, but I'm having a hard time following. What's a cupper? And what's "sth"?

由 FixNcell Phone Repair 完成的 2017年4月29日

Sth=something

just check all that ribben cable to have fully covered and doesnt make shortcircuit with ground.

I cant explain that much but this shorting causes ghost touch ,which is random and rapid touches after assembly of screen

由 Javidzed 完成的 2017年4月30日

He means check that there are no exposed copper traces or solder joints that may be shorting somewhere.

由 Rany 完成的 2017年5月1日

Javidzed how did you fix the ghosting issues?

由 allanwl 完成的 2019年6月13日

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applerepairshop @applerepairshop 声誉积分: 297 Apple Repair Shop 9 6 · Answer 4 · 2018-10-11T13:19:41-07:00

applerepairshop @applerepairshop

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Rule #1: ONLY USE GENUINE APPLE SCREENS.

Rule #2: If you use a 3rd party service, ensure they are  Apple Certified.

Rule #3: If you do not agree with Rule 1 and 2, there’s always Samsong phone.

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uBreakIt iRepairIt @ubreakitir87371 声誉积分: 193 5 3 1 · Answer 5 · 2018-04-07T09:32:24-07:00

I had a similar issue like this. I replaced the screen on an i7+ with two different aftermarket screens from my brother. He buys cheap screens and it was my only choice because the person wanted their phone fixed that day. I installed the 1st screen and about 24hrs later, the touch stopped working on it. I assumed it was the screen and installed a 2nd screen from my brother. 12hrs later the touch stopped working again.

At this point, I ended up getting a 3rd higher quality screen from my usual supplier and the touch stopped working after about a week. A hard reset fixed the issue, but the issue came back again. I posted this as a question, and the only answer I received, was to make sure the black tape that's on the back of the metal plate gets transferred over and stuck to the ribbon cable of the new screen. It was not installed, because that black tape usually does not fit around the touch IC chip that's on the ribbon cable of any model after the i6/i6+. Basically any model with 3D touch.

I am to the understanding that that black tape has no functionality other than to simply hold the ribbon cable in place, seeing it has no similarities to grounding tape. I haven't gotten around to giving this a try, but you might want to try that and see if it helps.

iPhone 7 Plus

Touch issues after 7 plus screen install replacement

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