Introduction

Apple's iPhone 6 and 6 Plus devices have recently revealed a fatal flaw: over time, the solder that secures the TouchIC chips on the logic boards flexes and cracks with the phone. As your phone sits in your pocket it naturally curves with the contours of your body, but it was never meant to do that. This issue centers around improper frame support that allows these TouchIC chips to be subjected to undue stress over time.

If the issue is actually related to TouchIC damage, commonly known as "Touch Disease", you'll need professional help to fix the issue. This guide shows you how to rule out other causes before deciding to take it into a repair shop or replacing/upgrading your phone.

Be sure to also read this article for more information on the issue: http://ifixit.org/blog/8309/iphone-6-plu...

Parts

No parts required.

In gambling, three bars are considered to be a sign you've won. Not in this case. If your phone shows a white bar across the top of the screen it's a sure sign you've got Touch Disease. Take it to a repair shop where they can fix the broken solder.
  • In gambling, three bars are considered to be a sign you've won. Not in this case. If your phone shows a white bar across the top of the screen it's a sure sign you've got Touch Disease. Take it to a repair shop where they can fix the broken solder.

  • It is possible to bend the phone back into place to restore touch functionality, however this solution is only temporary and the real issue will resurface, perhaps at a more inopportune time. Think of it like running on a spare tire, you shouldn't use a bandaid for long.

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Black Friday
Broken doesn't stand a chance.
If you're prone to putting your phone in your pocket when you sit down it may have gradually changed it's shape to develop a slight curve. This curve can be causing the touch issues.
  • If you're prone to putting your phone in your pocket when you sit down it may have gradually changed it's shape to develop a slight curve. This curve can be causing the touch issues.

  • A bend in your phone, slight or more pronounced like in this picture, along with intermittent touch issues can be indicative of "Touch Disesase" even if you don't have the telltale bar as mentioned in Step 1.

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If you've got a cracked screen and faulty touch issues, or recently dropped the phone, your first step should be to check with a replacement screen installation. Use an iFixit Guide to learn how to install the screen, and see if a replacement fixes the problem.
  • If you've got a cracked screen and faulty touch issues, or recently dropped the phone, your first step should be to check with a replacement screen installation. Use an iFixit Guide to learn how to install the screen, and see if a replacement fixes the problem.

  • Even if your screen isn't cracked, the issue could still be related to a damaged screen that just needs to be replaced.

  • Similarly, if a replacement screen solves the problem it may resurface down the line after a few hours or days. This is less likely a defective screen and more likely an issue with "Touch Disease" affecting your phone.

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Conclusion

If you see bars, or a bend, check out a repair shop to ensure your solder on your device isn't weakening.

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Matt Zieminski

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14 Comments

"...you've got Touch Disease. Take it to a repair shop."

...and have them do what?

William Totman - Reply

Hey that's a good point! A repair shop can generally fix this by fixing the solder, the point of failure in these devices. It won't necessarily protect it forever from having the same issue but it will restore functionality for the foreseeable future. I'll update the guide to detail that!

Matt Zieminski -

Which chip exactly are they soldering?

Nemesio Diego - Reply

One or both of these https://instagram.com/p/BCq2pPQitTN/

U2401 and U2402

Trent -

90% of the time we replace the Meson Touch IC on the iphone 6 plus and that resolves the issue. https://www.instagram.com/p/BL1HCQTg2rk/...

Wires Computing - Reply

The close proximity of cumulus and Meson to each other means that by replacing one you are always reflowing the other. Reflowing these is not a long term solution because the exposed pads on the bad joints oxidize which doesn't allow a good joint to form. It may leave your shop working, but will easily fail again. You should always replace both.

Also, I've found that the "grey bars" can often be intermittently fixed by applying pressure directly to cumulus which would indicate that it is the source of the fault.

shaffermarka -

Thanks my friend.. & clear explanation

AbdelHadi - Reply

iphone 6 light jamper

doctormobileizeh - Reply

It might be a good idea to put up a link to the ifixit.org article regarding touch disease. The article explains in a good amount of detail with out being over technical for the do it yourself-er or novice. It seems that there are repair techs that are installing a metal shield over the 2 chips that act as reinforcement. It was tested and seems to be more durable than the oem design. It would be nice if we could reinforce the aluminum frame so the "Bendgate" problem doesn't occur.

Kari - Reply

Great idea! I'll update the guide now to include a link to that article.

Matt Zieminski -

Or you can put a piece of electrical tape between the IC and the sticker that covers it.

Jasmine - Reply

So if this is a known issue with the Iphone 6, why is Apple not fixing it? I have only had my phone for a few months.

joannesafi - Reply

I can only speculate as to why Apple won't acknowledge the issue. They have a history of ignoring or avoiding a problem until things get to a breaking point, however.

Matt Zieminski -

I had this issue with my iphone 6.

I replaced the screen but issues persisted, however I noticed that when I was installing the screen worked perfectly (i tested before re-assembling).

After assembly issue was intermittent but mainly not working. Some random twisting of phone would get rouch to work again but not for long.

I opened up again and removed the plate which protected the connectors from screen ribbon cables, phone worked perfectly! I figured this plate must have something to do with issue; rather than removing completely I just removed the central screw. (there are 5 in total).

https://imgur.com/4iXxPHD

Still working great after 24hrs…

ed jones - Reply

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