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2016年9月16日に発売。モデル番号は1660, 1778で GSM かCDMA があり。/ 32、128、 256 GB / 色はローズゴールド、ゴールド、シルバー、ブラック、ジェットブラック

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TouchID and 3D touch issues after battery replacement

Hello everybody, I’m new here in the forum so I hope I’m asking my question properly. I just got my iPhone 7’s battery replaced and now I have two new unwanted features I’m asking you advice for:

# TouchID playing weirdly: I’ve search and read some other questions about TouchID not working, but my problem seems a little different. My home button works perfectly, the double tap to lower the status bar works, but when I’m asked to scan my fingerprint and I put my finger on the home button as usual, the screen starts moving it’s status bar rapidly up and down as if I were rapidly double touching the home button like ten times per second. As a result, it scans nothing. I managed to disable it from the settings, but there are still some apps that I can’t access because I can only disable the setting from inside the app and not from the phone’s setting;

# My beloved 3D touch is totally missing, and I really miss it. I’ve read this could be matter of the screen sealing to the phone’s body, am I right?

So while the 2nd feature is more a matter of habit I hope I’ll overcome soon, the more time passes the more I realize I need my TouchID back because some apps are still hostage of my fingerprint, and I’m referring to payment apps and bank accounts that totally relies on iPhones’ authentication security.

From what I just told you, do you think it’s something easily fixable on my own and worth buying a new screen seal on Amazon (sold at like 8€, I’d better buy a new battery kit lol)? Or it’s too risky or there’s something different I should replace? My home button works as usual except this psychedelic new feature so I’d be disappointed if I should replace my whole button.

I also thought I could make my screen changed because sometimes when it overheats some images remains impressed on the screen, but I'm procrastinating it because it's not a so annoying problem since it happens rarely. Instead, if I do try to change the screen, would it be of any help in fixing the TouchID? What do you think?

Really thank you to everybody will try to answer my question.

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This is a bit interesting. I'd suggest opening the phone first and having a look inside if you haven't already. When you say you got the battery replaced, you mean by a repair shop? If that's the case the technician working on your device may have not used the standard iPhone waterproofing seal, but instead just used glue or some other adhesive to bond the screen down, and that's what may have caused the 3D Touch and home button issues. Open the device and take a look around the home button and frame of the device, and upload some pictures too.

If the home button or screen were physically damaged in some way, they may need replacing, and unfortunately, replacing a home button means removing Touch ID entirely...

Just have a look inside first and hopefully we'll be able to identify the issue before replacement is necessary.

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I made my battery changed by a friend of mine who's in charge at his workplace in repairing the phones, and he's done thousands of reparations, that’s why I trusted, and still do, him because of the fragility of the operation. He used a kit bought on Amazon with a seal included (OCKERED branded). I've read someone overcame these issues by restoring the system, I'll try it today, then I'll try what you're suggesting me. I'm restoring first because the system is getting weirdo with WhatsApp notifications saying "new call incoming" while it's a simple text and other problems in notification center.

If I must reopen my phone, I need a new seal anyway, right? Can you suggest a good one? I'm typing from Italy.

Really thank you for your help

EDIT: as imagined, restoring the system throughout DFU mode didn’t fix the two main issues but the minor software glitches

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@sirasimo Unfortunately if the DFU reset didn't resolve the issue, then it is most definitely a hardware issue. The screen (which connects the home button/touch ID to the logic board) is a very fragile/sensitive part of the device and may have been accidentally damaged during the repair, which is causing 3D touch issues and preventing Touch ID from working. Maybe take the device back to your friend and see what they think about it. Hopefully, they'd be willing to replace the screen as it was working fine before the repair. And if the phone is opened up again, yes, you should probably replace the seal again if possible. Sorry to say I'm not too sure about a good supplier for seals outside of my country (typing from NZ here).

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@smashedliam thank you, I’m gonna do some research and then update this answer. Thank you!

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Simone Siragusa さん、ありがとうございました!
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