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2014年9月19日に発売されたiPhone 6の修理情報とガイドです。モデル番号 A1549、A1586、A1589。

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iPhone 6 cellular antenna problems

Hi All

I am new to the forum and this is my first posting so please forgive me if its in the wrong place and basic in content.

I have an old but much favoured iPhone 6 Model A1586 it has a progressively worsening intermittent cellular connect fault, switching it off and giving it a gentle tap will short term resolve the issue (all other services WIFI and NFC work fine).

Having done a little research I understand the cellular antenna to be top left hand side. On inspection there appears to be no loose screws or poor connections. I am confused because online tutorials refer to the cellular antenna being located as described above ( including IFIXIT ) and yet a significant number of suppliers illustrations refer to this component as being the WIFI antenna.

I would much appreciate some guidance as a rookie on the subject. I really like this phone albeit limited by the OS availability.

Thank you for your time.
Dave

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The cellular antenna is both the top and bottom bezel, and the flex cable/board screw contacts connecting to them.

4G connection requires at minimum two antennas and being a world phone means Apple need to fit way too many frequency band compatibility into the phone, therefore the bezel and standalone antenna components all play a role in cellular RF functions.

iPhone 6 don't have wifi diversity yet so wifi and bluetooth are entirely at the top of the phone, the top bezel also serve as GPS and NFC antennas in addition to wifi and cellular features, the bottom is entirely for cellular.

There are also multiple bridging cables and contact clips linking the top antennas to the cellular/GPS chips, which is located at the bottom end of the board, then there are multiple power amplifer/filter chips in the RF system, any bad connections between them may cause you to lose some RF path.

I don't remember the details for iPhone 6, it has been years since I last checked the schematics.

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Agreed. Cellular connectivity is complex, and there are a whole host of things that come into play when trying to troubleshoot it. Antennas are commonly mislabelled because Apple doesn't tell anyone what's what.

I will see if I can pull up some boardviews when I get to a Windows machine that's not property of my employer. I'm not sure they would look too kindly on me trying to run ZXW on there. I have a pdf boardview that conveniently lops off the whole top arm of the board, which isn't helpful in this case.

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Thank you Tom for quick response and detailed explanation of the phone's set up. I am now at lease clear from Alisha and your good self what I am up against. I really want to get this mobile up and running again if possible, it's physical size and layout just suit me.

Alisha thank you for your continued help it is much appreciated.

Thank you both

Dave

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Dave さん、ありがとうございました！
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