Here is my little review of the case. I am no tech geek so please take what I post as my personal experience with it.
Initial impressions: When I first got the package I was pleasantly surprised by the box it was shipped in, it was very well protected. Many companies just use a plastic shipping bag so some cool points for that! The packaging is slightly different from what is pictured but the contents is all inside.
You get a front and back screen protector which is said to be comparable to SGP Steinheil Crystal Clear. I have not used them yet because I already have a set of screen protectors on that I am happy with. You also get a squeegee, lanyard,
install tool which looks like a guitar pick, and a microfiber cloth.
The stainless steel band is very thin but not in a cheap kind of way. It appears to be slightly brushed to resemble the band on the iPhone 4/4S and while it looks pretty close it doesn't match exactly. That's not a problem for me because it still looks pretty snazzy!
Assembly: Putting this bumper on seemed pretty to the point but I soon found out that it required a little work. The silicone band was easy to put on the phone and you have to make sure that it is lined up properly or you will have a tough time getting the steel band to lay right. So just make sure the silicone is lined up right and you should have no problems.
The steel band attaches with 2 hooks on the bottom of each side of the band. These hooks attach to the bottom piece quite easily, as long as the silicone is lined up right. You may have to do some extra pushing to to get the hooks to meet up but not a problem. Once the steel bumper is attached it is a tight snug fit and doesn't move around on the phone at all. After installation you will have to use the install tool (guitar pick) to fix the silicone band because it may have rolled up or got stuck under the steel band during installation, but it works well to get the job done.
Performance: It has excellent lay on the table design because the silicone gives a high ridge of the front and back of the phone and with the screen protectors given you should be protected from small drops. bumps and scratches. I did a drop test accidentally, my 5 year old son dropped my phone from about 3 feet onto carpet and everything was good. I'm not going to do a test of a harder surface but I feel pretty confident that it should give some defense against minor drops once and a while. if you are clumsy or drop your phone often, this may not be the case for you.
Signal Strength: Please keep in mind that I am coming from an area that has excellent coverage, I usually have 5 bars in most places if not all of them, accept in my home. I have Sprint so I have an Airave in my home which again gives me 5 bars of signal strength. I did turn it off to get some accurate numbers and here is what I have found.
With my Airave on without the case I have 4-5 bars normally and it bounces between (-71 to -76), with the case on I drop from 5 bars to 4 bars (-84 to -89). These numbers were the same in my house with the Airave on and outside, in the market, church etc...
Without the case & the Airave off I normally have 3 bars (-93 to -96), and with the case on I have 3 bars most of the time but sometimes drop to 2 bars and I hover around (-101 to -104)
Wifi and GPS were unaffected but I didn't do a speed test to say definitively.
So if you are in an area with good coverage you may see a minor drop in signal but may not see a drop at all. For those with weaker signal strength you will still see the small drop in signal but if you only have 2 bars to begin with, losing another bar could cause you to have dropped called etc... Bottom line is this case doesn't impact my signal much at all because of my coverage.
Final Comments: I like the case very much and love that my signal isn't degraded much at all. It gives me a close look of a naked iPhone while still giving me some protection. The silicone hasn't changed colors and doesn't attract lint and dirt so far so I do think it is a keeper for me.