Released on September 19, 2014, this 4.7" screen iPhone is the smaller version of the iPhone 6 Plus.

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iPhone 6 NFC not working

I have assembled an iPhone 6 and it seems that everything goes fine except the NFC. The phone does not respond to the POS when using Apple Pay. Since cellular and WiFi signal works perfectly, the antenna on the back has no problem.

I think there might be poor connection between the logic board and NFC antenna. If so, which screws should I scrutinise to fix this problem?

Answer this question I have this problem too

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Since when do idevices have NFC?

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@pccheese, they've had them since the intro of Apple Pay. Apple Pay is essentially a neutered NFC that can only do Apple Pay. This is why Android Pay and Apple Pay work on the same systems. If you hold an iDevice back to back to an Android NFC enabled device, it will trigger an NFC transmission and the iDevice will try to start an Apple Pay transaction. No joke.

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Sweet. To bad it doesn't work for general NFC applications though. BTW @avanteguarde, you qualify for my team and I would like it if you join. It's called "Master Techs (invite only, not exclusive)." I can't figure out out to invite, but I think if you find it you can probably send a request to invite.

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@pccheese, Thanks! I will check it out.

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3 Answers

Hey there "Facebook":

What prompted you to rebuild your iPhone? Did you buy individual parts from eBay and then reassemble them?

The NFC antenna is the top bezel itself, the top bezel has 2.4G(wifi and Bluetooth), cellular diversity, GPS and NFC. The main feed point for GPS, cellular and 2.4G is the screw boss under the plastic add-on antenna, with a "grounding bracket" attaching it to the bezel. The plastic antenna serves as the 5G wifi antenna.

The NFC antenna feed point is the screw boss next to the camera and sleep/wake button, with a flex cable under the camera bracket serving as signal conductor.

There is an additional feed point in the middle of the bracket, it does not connect to any wireless services, however it connects to a dynamic switch to tune the top bezel dynamically to serve different bands.

The F-shaped flex cable on the back of the board is JUST a bridging cable, not an antenna in any way.

It is possible that the grounding bracket found in step 29 of the repair guide below may be missing or broken. It isn't exactly clear when the actual "antennae" is on the 6 and higher but some people believe that it consists of the upper portion of the phone itself.

iPhone 6 Logic Board Replacement

I would appreciate hearing back from you about this.

Thanks,

Michael

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It looks familiar, looks like one of my posts.

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My first ever repair on an iPhone was replacing the battery on my iPhone 6. Once reassembled, everything seemed fine except that the sleep/wake button no longer worked. Upon investigation, I noticed that I had damaged one of the lines on the flash/microphone/power button assembly cable, no doubt the one that carries button clicks... so that will probably need replacing - the most complex thing to do, it seems!!

I have since discovered, however, that the contactless payment function no longer works... so I suspect that I have damaged the NFC antenna or something like that. When the phone was open, I did lose one of the 1.2mm screws - the one identified in step 33 of iPhone 6 Power Button Cable Assembly Replacement. I had removed it in error, knew that I had dropped a screw couldn't find it and only noticed upon inspection that it was this one that went missing...

Is it likely that this screw is the cause of my non-functional NFC? The URL above does talk about this being the screw that secures the antenna interconnect to the logic board... but nothing looks wrong there. Does the screw need to be present to make the connection, or does the interconnect need to be screwed down to ensure a good connection?

Any help most gratefully received!

G>

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13 Feb 2017

SO, last night I replaced the flash/microphone/power button assembly cable, and my power button works again! Camera seems fine too, although maybe not completely horizontally aligned...

Haven't tested NFC yet.

Killed my flash, though :(

G>

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Did this fix your NFC in the end?

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Yep, it did fix it! I had the opportunity to test that last week and it works fine.

I'll need to open up again to look at the flash problem - the camera works fine, but the flash doesn't work for photos or as a torch. Totally dead.

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So, everything now works except for the flash - I'll have to open up again to have a look at that. The camera works fine, but the flash doesn't work for photos or as a torch.

NFC works again - I think the screw mentioned in my original post is pretty important to achieve a good connection.

I'll update once I find the time to look into the flash issue.

G>

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