[Note 7 Questions & Answers] br0adband:
It's a bit more than 0.000001%, technically speaking. ;)

I've never seen anyone in any cellular carrier retail outlet of any kind do anything of the nature you just asked about:

- bend = Nope, never seen it happen, most folks are too scared to do that with a demo phone because TADA! if they break it they end up having to pay for it which is not what they had in mind to begin with

- put pressure = Nope, never seen it happen, never done it myself because I don't care, I don't put my phone (a Galaxy S7 Active) in my pockets, it's always in my hand or tucked under an arm temporarily if I need the use of the hand that was carrying it

- run benchmarks = that requires installing them and on an Android device with the Google Play Store that means you have to sign into a Google account tying the device to you so you can actually access the Play Store and download said benchmarks and 99.9% of the people that go to a cellular carrier retail store don't want to stand there doing all that just to know what a device is capable of - this is why there are hundreds if not thousands of reviewers online nowadays on YouTube and at specific websites especially Android hardware related ones

- Didn't they drop any of the phones on the floor? = considering what I just explained about the bending and putting pressure on the devices points above, this would be a really really severely stupid thing to do and besides, what cellular carrier would ever let you do such a thing? Hell, even the Galaxy S7 Active which is a more rugged version of the S7 itself would never be demoed directly by tossing it on the floor or across the room. AT&T won't even let their retail employees - and I say AT&T because the Galaxy S7 Active is an AT&T exclusive - dunk one in a bowl of water to show off the water-resistance because of the IP68 rating. It's just not done, simple.

Do you work for Samsung? Have you seen any "insider info" that you can provide source for that says Samsung has publicly announced "We can't figure out what the hell is wrong..." or words to that effect? Hearing stuff on some website or seeing it published someplace that's not actually a press release from Samsung itself and only Samsung is something I would instantly have to dismiss as conjecture and speculation personally. When and if Samsung determines the actual cause (if they ever do) then we'll find out, that much you can be absolutely certain of.

Until Samsung itself comes out with a public statement providing the determined cause, all other reports - even ones that are claimed to come from someone that works at Samsung - are nothing but smoke and mirrors AFAIC.

Hopefully someday soon we'll know, but in light of all this info, and in light of Samsung's public announcement that yes they will be utterly destroying every single Note 7 they get back per the recall it's safe to say that yes, the Note 7 is absolutely dead and it could very well be the end of the Note line entirely.

It's a damned shame, really, because I know it's a damned good device - my GS7A is the same thing really just minus the stylus and supporting hardware and the retina scanner. I have a larger battery in this GS7A and I just got 15+ hours of SOT yesterday in some testing of video playback endurance - this 4000 mAh cell just doesn't like to die. ;)