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2014년 9월 19일에 출시된 이 4.7” 스크린 iPhone은 iPhone 6 Plus의 작은 버전입니다. 모델 번호 A1549, A1586 및 A1589로 식별됩니다.

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Wifi button greyed out, bluetooth has spinning icon.

All,

I have an iPhone 6 that was suffering from very poor to nearly unusable wifi as well as bluetooth unreliability. I pulled the motherboard to check if the flex antenna was good. When removing the flex antenna 3 of the connections came out fine then the third fell off without me touching it. The connection had not been properly soldered to the board.

I tried to solder it back on, but it was beyond my soldering skill (some solder wicked up into the connector and ruined it). As a result I purchased a new main board. After install of the new mainboard I reset and began a restore from cloud on the phone. Wifi connected without issue, I did not get an opportunity to verify bluetooth. After about 20 minutes of restoring from iCloud a message popped up saying the wifi connection was lost and the restore could not finish. After this the phone was back into the same state (wifi greyed out, bluetooth unable to connect). I tried multiple factory resets etc. with no success and tried pulling the motherboard and inspecting my work, I found nothing wrong.

With all work I was doing I used a magnetic screw organizer and labeled every screw. I’m confident I used the correct screws in the correct places.

What I’m doing moving forwards: While I was careful not to touch any connections and the board came with the flex antenna already attached, I did NOT know the cover on the top left was part of the antenna and it is possible I touched it. I’ve ordered a new cover, flex cable, and screwset. I’m going to replace all of that. I will also be cleaning the connections in that area with denatured alcohol and a cotton swab to remove any oils. After that I’m unsure of what else could have gone wrong, I’m wondering if I got a bad board. It seems very odd that the phone would work fine only to stop.

Can anyone offer advice on what else I should look at?

Thank you!

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

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I ended up replacing the flex antenna and wifi antenna cover and that fixed it.

Part of doing the replacement I went through with a q-tip and denatured alcohol and cleaned every contact on the phone that I could find (including under the wifi cover). I suspect that either this worked OR the cover that I transferred from the previous logic board was bad. I did not find any mistakes on my inspection as I took it apart again.

So far it’s been working for about 45 minutes…so cross your fingers hopefully it keeps working.

Thanks!

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When removing the flex antenna 3 of the connections came out fine then the third fell off without me touching it

The part that fell out, was it on the L shaped antenna cable itself or on the logic board?

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Hey, thanks for the reply. it was the logic board connector for one of the 4 coaxial connectors on the L-shaped antenna. Basically, when I disconnected the third connection the entire antenna fell off, with the board connector still attached to the 4th connector. I think that was the source of her wifi/bluetooth woes originally. What I can't explain is why the wifi started working when I replaced the board (which came with the new antenna) then stopped working after 10 minutes to an hour.

The Wi-Fi antenna if damaged will give little to no reception for Wi-Fi and GPS so you would have to be next to the wifi router to get signal.

For the greyed out Wi-Fi that is the bluetooth / wifi chip going bad, I'm surprised it stopped working just from that, maybe the board was repaired previously for that problem.

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