Most of the AnandTech crew seems to be averse to putting cases on their phones for a variety of different reasons. I’m still of the persuasion where I want a case for everything that I’m going to carry regularly both to prevent putting scratches and also have a resulting device form factor something that looks a bit different than the norm.

A few weeks after our iPhone 5 review posted, Element Case reached out to me and offered to sample a review unit of their upcoming iPhone 5 case, the aptly named Sector 5. Element Case has been known for a while for making exotic cases that use metal instead of plastic and look like nothing you’ll see others carrying around, so when I heard about the iPhone 5 version I jumped at the opportunity. In addition, since I spent a lot of time back in the iPhone 4 and 4S days doing attenuation testing, getting to the bottom of whether this unique case detunes the antenna was particularly intriguing.

Inside the box is the case itself, a removable adhesive suede back cover, keychain mountable screw driver, a “transit EVA case” which is a hard pouch with zipper for the phone, and some rash guards for the aluminum side.

For installation, Element Case wants you to apply removable sticker “rash guards” which essentially prevent the anodization from chipping off of the device. In theory these are great, but not totally necessary, as the case includes a soft rubber material around its inner perimeter to prevent aluminum from touching aluminum. The Sector 5 wraps around the iPhone 5 and then screws together at top left to lock the phone in place. The supplied screwdriver is keychain mountable so that if you need to get your iPhone out of the case it’s handy. In practice there really shouldn’t be any need to take it out of the case unless you’re moving to a different one or have a stubborn docking station, since the SIM tray and other connectors are easily accessible on the device.

The Element Sector 5 is a completely different case than the norm, since, like I mentioned earlier, it’s made from 6061 aluminum instead of polycarbonate plastic, silicone, or some other polymer. This gives it a completely different in-hand feel than basically every other case on the market, one that’s eerily similar to the iPhone’s native aluminum characteristics. With the case on, the overall package is still surprisingly light since there’s a lot of material machined out of the sides. With the case installed, I measured a mass of 133.7 grams over the iPhone 5’s native 112 grams.

For the back there’s an adhesive sticker which in my case was suede, though there are different back materials available. Having a suede backed device is something very different from what I’m used to, and surprisingly enough works well. I haven’t picked up a lot of dirt or grime leaving the phone backside down on surfaces, and the suede feels great.

On the left side is a large cutout for accessing the vibration switch and volume buttons. They’re a little difficult to get to because of the depth of the machined groove, but still workable. At top is the power button, and beside it a groove where more material was machined out. I have no issues with the power button, it is still clicky and communicative.

The right side has a cool cantilever looking structure with a large enough gap to get to the SIM tray and ejection port. I’m very grateful that Element Case chose to leave the SIM tray accessible since I’m constantly swapping SIMs, and making you take the whole case off to get to this would get old fast.

At the bottom are cutouts for the microphone, speaker, earphone jack, and lightning connector. The Lightning connector is big enough for the standard Apple USB to Lightning cable, but not quite big enough for the Lightning to 30-pin or the Amazon Basics Lightning to USB cable, both of which required filing to make them fit. I’m not surprised by this however since it seems as though every Apple ecosystem case I come across requires filing to make all the accessories work. The earphone jack hasn’t been a problem with my Shure SE535 cable, thankfully.

The aesthetics of the Sector 5 case are radical. You quite honestly are highly unlikely to run across someone with the same case on their iPhone 5, and as a result it’s always drawing attention when I have it on. I find the Sector 5 looks like something out of Quake rather than an iPhone case, with the aggressive geometric protrusions at the four corners, modern angular shape, and radical design. It’s definitely a bit crazy in the industrial design department as far as an iPhone case goes, but I’m a fan of how this makes the device look.

In terms of feel, the Sector 5 is a bit sharp at times but also is easy to get a firm hand grip on, as the bulges at the four corners make it easy to grasp onto. The Sector 5 also doesn’t make the device much thicker than it is already as a result of its design. The tradeoff is that there’s not too much front display protection beyond the supplied screen protector (which I almost always refuse to install when supplied with cases), but there is a lip so that when laid front down the device isn’t totally coplanar with the surface it rests on.

I’ve dropped the Sector 5 with the iPhone inside twice and was left only with a small deformity from the impact that is hardly visible, with no discoloration or scratching off of anodization. The case looks like it wouldn’t afford too much protection, but it does a good enough job at deflecting impacts on the sides or back; just avoid the front unless you’ve applied the screen protector.

The big question is just how much adding an aluminum case to a smartphone affects antenna gain and cellular performance. I’ll note that I’m still using the case on a daily basis when using the iPhone 5, so the short of the matter is — not a whole lot, if at all.

First, Element Case has included polymer links between each of the four main aluminum blocks so there’s no continuity between them, which is easy enough to verify with a multimeter. In addition the case is insulated from the aluminum exterior of the iPhone 5 with a rubber material, so there’s really no galvanic contact between case and phone. That’s a good first step to not change too much of the ground plane or inadvertently create a path between the bottom primary antenna and top secondary antenna on the iPhone 5. The iPhone 5 has an RFMD RF1102 tuning block and seems to do a good job dealing with any antenna detuning that the Sector 5 might introduce. I won’t say that the Sector 5 doesn’t affect the antennas at all, as adding conductors this close to the device clearly does, but the much improved tuning onboard the device seems to cope with it perfectly well and I haven’t noticed any ill effects.

101 dBm RSRP on the iPhone 5 with Incipio Dual Pro, -102 on iPhone 5 with Sector 5. I've done other testing where both were identical.

I compared my iPhone 5 against a few others also on AT&T LTE (Band 17) and on AT&T WCDMA (Band 2 PCS) and didn’t notice any difference in RSRP or RSCP respectively after allowing the two to stabilize. I’m impressed that there really is no difference, and in using the device a lot with the case on I haven’t noticed any difference on my mental signal map.

At $139.95 the Element Sector 5 definitely isn’t a normal case, nor one that’s in everybody’s price range, but if you’re looking for something that stands way out from the norm and has rugged construction I’d definitely recommend it. It's quite a head turner.

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  • noblemo - Sunday, January 27, 2013 - link

    It depends on the design and the impact force. Metal absorbs energy through both elastic and plastic deformation, and also transfers energy around the phone. Silicon acts as a buffer to cushion the blow--the rubber inserts in this case perform a similar function--but a silicon case will also transfer part of the force to the phone. By analogy, automobiles have composite bumpers to absorb low impact collisions, and metal crumple zones to absorb high impact forces.

    It would be interesting to see some comparative drop test results. As others have mentioned, though, the case is a luxury item primarily focused on design aesthetics.
  • Guspaz - Monday, January 28, 2013 - link

    It's not obvious from this review that this case features rubber inserts. I'm not saying it doesn't, mind you, just that reading this review gives the impression that the case is entirely metal segments joined by "polymer links".
  • noblemo - Monday, January 28, 2013 - link

    "the case includes a soft rubber material around its inner perimeter to prevent aluminum from touching aluminum."

    "the case is insulated from the aluminum exterior of the iPhone 5 with a rubber material"
  • Guspaz - Monday, January 28, 2013 - link

    Ah, missed that.
  • zlandar - Saturday, January 26, 2013 - link

    $140 for a smartphone case? Lol.

    i'm having a hard time seeing how this case offers more protection than a slim TPU case. Granted it looks nice.
  • Shadowmage - Saturday, January 26, 2013 - link

    A fool and his money are soon parted.

    (Why is this marked as a spam comment?)
  • Fx1 - Sunday, January 27, 2013 - link

    So let me get this right...

    Your putting a 140$ case which looks crap on a crap phone that also is over priced.

    Well the people who made this case have got some things wrong.

    1) People who use iphones really care about how they look. Because thats the only reason you would buy an iPhone against android today. So making a case that makes the phone uglier than your average Android is kind of pointless.

    2) charging $140 is clever because everyone knows iPhone customers really have no idea the value of things. They think 64GB cost £200 more than 16GB. But the problem is that phone insurance costs less than $140 so whats the point in protecting something which you can fully insure against damage.

    3) The average iPhone customer is pretty stupid. Thats why they use iOS. So anything that looks remotely complex will most likely short circuit their brains and they will never figure out how that case works.

    4) Sending it to Anandtech is not a great idea. Because we all know Anand is a Apple Fanboi but what Anand refuses to accept is that most his readers dislike Apple and everything they make. So its kind of lost on everyone.
  • vastac13 - Sunday, January 27, 2013 - link


    I know what you did there :P
  • eanazag - Sunday, January 27, 2013 - link

    I would not want to see a phone case reviews on here unless it is unique. That being said. I love the case and am glad it was reviewed. I wanted it till I got to the price tag. I'd throw $40 to $50 at it. $140 is a new video card or SSD. That price ventures too far into the "what else could I spend my money on" realm.
  • volant165 - Monday, January 28, 2013 - link

    Yes, smart phones and tablets are all priced a bit insane. Moving on from cost of ownership, I own several Element cases, previous iPhones. Really like the design, variety, and added protection. However, the Sector 5 case for my iPhone 5 seems to be expanding and losing it's grip after about two months of use. (The side where the sim card goes in.) Have written to Element case to see what they say.

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