这款4.7英寸iPhone于2014年9月19日发布,是iPhone 6 Plus的缩小版。

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Poor cell data signal after charging connector changed

I took my iPhone 6 in for a charging port replacement as it was not charging. They replaced the charging dock assembly but when I got it back, the cellular phone and 3G data signal is substantially poorer than before. I do not get signal at all in places I used to get fine signal, and other places I got great signal I get very poor signal. I have lived and worked in the same area for 3 months and had consistent signal every day without change, only now after this repair it is suddenly substantially worse.

I took it back to the shop and explained but they washed their hands of it and said there was no issue.

On the iPhone 4 there were a number of metal tags that connected the cell antennae and if these weren't connected fully it could degrade signal.

What can I check on the iPhone 6 that could be responsible for degraded signal? I do get some signal in some places but it is much worse than before and it is definitely since they replaced the charging dock.

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I had the same problem after doing this repair myself. I then replaced the original part and the signal was fine again. Next I got a replacement part from a different source (not ebay) fitted that, and all is good. So my experience is it was a faulty part. This seems to be a common problem.

i have the same problem after installing a new connector from ifixit. I think the new part is faulty, i will try to get ifixit to send me a new one.

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First of all, why did they replace charging port?

It is actually quite rare to damage the iPhone lightning port, 80% of the time, it is just dirt, lint, fluff etc. Inside the port that prevents proper charging.

As for signal, it's possible if they replaced it that it may be a low quality part, or they haven't connected everything up correctly.

You could open it up and post some pictures here for me to have a look at, I could possibly help then. :-)

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Hey @gedo1992 how familiar are you to replacing the charging port assembly+ on an iphone 6? I just need to know what to avoid to damage the phone, I have successfully replaced the front screen and battery in the same phone so i know a little bit but, this is going to be the hardest repair that i have done. The reason I am repairing the part is, recently my phone was dropped in water but i threw it in a mix of rice and damprid, after about 5 days i tried to plug it in and it ran like a champ again, but when i took the charger out it had corroded so i took a further look and after some thinking and inspection, i found that the damprid had caused damage in the charging port.

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INTERESTING OBSERVATION: Comparing original Apple and aftermarket iPhone 6 charge port flex assembly.

Like many others have commented on IFIXIT’s forum and on IFIXIT’s iPhone 6 charge port repair guide, I had intermittent cell service and signal strength after replacing the charge port flex assembly. I purchased the part from an eBay supplier, and as with many others, had the most difficulty re-connecting the antenna wire to the motherboard, but eventually got it. As many others have reported, the cell service would fluctuate between no service, searching, 1x, and LTE, but could rarely make calls. Being confident in my repair technique, I concluded the part was defective, and had the same supplier provide another part. This one I installed with exactly the same result. It is worth noting that this problem has been reported for aftermarket parts from several suppliers including IFIXIT.

A number of others reported having normal performance upon re-installing the original flex assembly. Unfortunately, I damaged the original Apple flex assembly during removal, so I didn’t have the opportunity to try that. After reading online about the cell antenna construction using the isolated ends of the phone case as part of the antenna system, and about how the charge port flex assembly has screw connections as well as metal tabs on the underside that need to contact the metal case, I decided to measure continuity between several of the case grounding areas of the flex assembly and the flex assembly’s outer conductor of the antenna connector wire. I did this on both the eBay part and the original Apple part, and found an interesting difference.

Refer to the image of the part below with the metal parts of the flex assembly where continuity was measured. On the Apple part all six locations showed continuity to each other. But on the eBay part locations E and F were isolated from the other points.

Assuming the Apple part has the correct condition, and knowing that points B, C, and F are intended to be connected to the central case, and point D to the isolated end of the case, I suspect that the eBay part is responsible for the cell signal issue.

I would be interest to hear if others have feedback on my finding or other thoughts on this issue.

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