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

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How does the antenna design on the iPhone 6 work?

Hello,

I noticed that the housing of the iphone 6 consists of three parts. one part is the big middle part where the logo is, which includes the two metal parts enclosed by the plastic stipes (where the camera and flash are i.e.) and then the two metal bands one on top and one on the bottom (where headphone, lightning and speaker grill is).

These metal bands are not connected to the main "chassis", they are only attached with molded plastic and are therefore electrically isolated.

My question is, since internal parts are connected to these metal bands and the logic board also has a kind of connection to it, could it be that these bands are the antennas themselves ? and (i suspect so) do the have to be isolated from the main "chassis"?

the other explaination for this design could be that it is cheaper to build that way and that the "gaps" in the housing (the plastic stripes) are enough to allow antennas on the inside to work.

does anybody know more about this ?

Thank you very much,

Romazzino.

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Does antenna transmit signals eventhough it was covered by phonecases

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I have an iPhone 6 and I noticed that at the back side of my phone above antennas are lightly torred at both right to left . Since I don't know how it occurred will it face any issues lately

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I got an question on this topic What antenne does give me the regular cellular connection ??

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The bottom antenna that is part of the charging dock assembly.

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Chosen Solution

Actually, the top and bottom bands themselves ARE the primary components of main antennas, the plastic holders are there to isolate the antennas.

So I'm afraid Rany's answer is not entirely true.

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I did not closely look at the iPhone 6, which has aluminum upper and lower parts. Was basing my answer on iPhone 5/5S design, for which here's for example a quote:

"As industrial designer Don Lehman has explained, the iPhone 5’s back panel features a cell antenna on the top and bottom of the device, surrounded by a thin strip of glass that allows Wi-Fi, GPS, Bluetooth and other signals to “peek” through. These antennas are so far apart that unless you have freaklish long hands, it’s impossible to “bridge” them with your grip. So long Antennagate."

(Read more here).

What happened with iPhone 6? The metal parts became the antennas?

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Metal bands are always antennas. Look at iPhone 5/5s, the GPS/cell secondary RF connection is just a stub, the band structure it connects to is the main deal.

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I have no particular knowledge in antenna design, but the way i understood it is that every antenna has to be a specific length to emmit a certain wavelength of radiation/signal. in order to make the antennas smaller it is also possible to use a fraction of the needed length as in 1/2 1/4 1/8 etc. and tuning the signal that goes through it to "emulate" the right wavelength by resonance. my guess would be that the engineers have figured out a way to use the metal bands as antennas for multiple purposes (wifi+cell i.e.) by tuning the signal that goes onto the metal band so that it emmits signals in 800mhz and 2,4ghz simultaniously. but then the question is, if the "radio" adapts to the antenna (metal bands) hooked up to it, you could theoretically hook that radio up to any kind of metal thing and it would still work (more or less efficiently probably, but still work, as long as its isolated) ?

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@Romazzino, the length of the antenna as you said, and the ensuing wavelength that is emitted are what caused the "antenna gate" for the iPhone 4. I'm not sure if you knew about it. So to make a long story short, sometimes people held the phone in a way that bridged 2 insulated components (the antenna with the rest of the frame), rendering the antenna longer and consequently the wavelength different. That caused the iPhone 4 to drop calls. Apple solved it by offering free bumpers that completely insulated the whole frame and prevented the accidental bridging. Then they resorted to a different design with the iPhone 4S and beyond.

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@Rany, the design in the 4S is essentially no different to the design of the 4. Only difference was the addition of one more antenna that the phone can alternate between. But its basically the same design.

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Most Helpful Answer

As far as I know:

The antennas are located on the top and at the bottom of the phone.

The separation in the case is needed to allow the signal to get through. The top and bottom parts are not themselves the antennas.

Top 2 antennas: (Wi-Fi and Bluetooth), (GPS + secondary cellular);

Bottom antenna: primary cellular antenna.

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Thanks for your answer, this is very helpful :)

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whats the difference between primary and secondary?

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Hello Romazzino,

Good Question. iPhone 6 series uses LDS Antenna . This Antenna is embedded in the upper and lower part of iPhone, which you clearly mentioned that iPhone back is in 3 parts. Center part is metal and upper and lower part ( in the shape of D ) is plaStic, these two D's contain Antenna.

for ifixit, One simple solution.

1. Remove Bcak cover in iPhone 5 and make the phone call - See if call is placed or no !!!

2. Remove Back cover in iphone 6 series and make the phone call - first check if the signals are available or no.

I tried both methods, could not place call on iPhone 6 with back cover removed.

This will confirm the Theory that RF Antenna is placed inside back cover in iPhone 6S.

I will be writing complete Article on this today itself at http://smartfonearena.com

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this link would make you clear

iPhone 6 Plus 5GHz Wi-Fi Antenna Replacement

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The antenna stripes are unsightly (stick out like a sore thumb), break the homogenous flow of the case form and look like grout on bathroom tiling. As an industrial designer, I can´t imagine that Apple include such design transgression as an indespensible aethetic design feature - no, they are there for constructional and functional reasons. These ugly stripes are probably necessary for adequate signal reception. If that´s the case though, than how do other manufacturers manange using far thinner, less obtrusive atenna stripes. The case Iphone 6 is beautifully thin and sleak, but the antenna strips break the sleakness, and are the reason why I won´t buy the iPhone 6. Rumour has it the iPhone 6S will retrain these blemishes - possibly because of tooling cost investment, or because that would mean admitting their quick and dirty compromise and styling mishap.

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Apple used much thinner on iPhone 4 to 5s models. Now more parts probably act as antennas, including the metal part that is corresponding to glass parts on the iphone 5-5s

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Hello! sorry to bother but, can someone kindly help me out and find a guide to replace the GPS Flex Ribbon? That's all I'm missing right now

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romazzino will be eternally grateful.
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