Released on September 19, 2014, this 5.5" screen iPhone is the larger version of the iPhone 6.

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No Touch ID after quick battery replacement?

Hi Guys,

I've been repairing iPhones since March of 2010. I've owned a cell phone buyback company since then as well, so I'm not a beginner in the repair/refurb game.

So I went to quickly replace my old 6 plus battery, opened it up, did NOT remove the LCD just let it sit open. (I usually remove but expected a quick replacement).

I pulled the adhesive tabs under the battery, one ripped so I ended up having to pry up a bit on the old battery.

Other than that, the old battery came out fairly quickly, new one went in, closed the phone back up and the home button and Touch ID both didn't work anymore?

So I figured it happened when the LCD fell briefly and twisted the flex cables (I'll be removing all LCD for all battery replacement now). So I tried quickly replacing the LCD back plate with a working one from a parts phone.

The home button worked but the Touch ID is still not working? It gives a message when the phone is turned on saying Touch ID failed? What's going on here?

This is a first for me, how did the Touch ID get affected at all by a quick battery replacement? If it was the home button flex cable, why doesn't Touch ID still not work after replacement flex was installed? I never touched the home button area or Touch ID sensor so I'm not sure what happened?

This one has me stumped and of course it's my personal phone, I've never seen this on any other battery replacement I've ever done.

Please help

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Did you unplugged the battery again after changing out the back Metal plate with home button extension cable for the screen? It is required when home button extension cable gets unplugged.

Backup your phone and restore it as a last resort.

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I have a similar issue. I had replaced the battery in my iPhone 6 Plus and it worked well. Except, the touch ID functionality stopped working. I removed the screen completely before transferring batteries. One of the adhesive strips had snapped as I was trying to remove it so I did have to pry the battery up a bit but it didn't appear to cause any damage. The button itself works normally, it's just the touch ID/reachability parts that don't work anymore. Any ideas for fixes? Or would I have to do a full logic board and home button swap to fix it?

by

Same issue here. iPhone 6 (not Plus). Replaced the battery, reinstalled original screen and have non-functional Touch ID. Touch ID was working before the replacement. Even tried swapping in the original battery. No-go :/

by

I really don't see how the touch ID of the home button goes bad after a battery replacement. It's weird really as I've never had weird issues doing battery replacements on any phone. I'm guessing it's either one of these things:

- Battery was pried from the right side with a tool where the logic board was causing damage to the board.

- Screen was unplugged while battery was still plugged in.

- Or even more weird, the phone wants a restore (DFU if needed) to get the touch ID to work again (this will wipe data if you do it).

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1 Answer

Chosen Solution

When prying out the battery, which side did you pry from? Left side or logic board side?

Have you made sure you didn't knock anything off?

Try cleaning all connections and reconnecting them to, also look for any cable damage etc. :-)

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