I'm Kyle with iFixit and we're gonna
talk about foam durability I have here
Zach from the channel jerry-rigged
everything so you've got a whole bunch
of phones here and these are all phones
every single phone you to the video
about kind of what your perception of
the phone was so what phones did you
bring to show us I brought a couple
phones so I've done over 30 durability
tests on my channel and only four of
those phones have broken the phones I
brought with me today are the Nexus 6p I
have two of those phones I did talk
about that in a second we have the me
five right here and then we have the
next bit Robin so the reason I do my
durability test is because these cell
phones if they literally are the most
abused pieces of technology on the
planet so I put it through two years of
abuse in about three minutes okay and
then post that video all right channel
so what's the abuse we start off with a
scratch test because you know the glass
on the front of the screen we see how
hard it is and see if it is resistant to
scratches so most phones have like a
gorilla glass on it like real glass
three or four yeah yeah and so that
normally falls on a level six on the
Mohs scale of hardness like that's when
it starts to scratch the level six pick
and there's two phones the Motorola
Droid turbo 2 and then the galaxy s7
active that actually have a plastic
screen on the front and this is
important because as plastic screen
scratches much easier right than a glass
screen the same thing with like the Ben
test at the end of my durability video I
always see if the phone is flexible or
if it'll catastrophic would break and if
you know that a phone is gonna do this
you can take steps to prevent it if the
phone is going to break it usually
breaks along a battery line so this is
the Nexus 6p in the weak point on the
Nexus 6p was a right by the power button
and be right above the battery line is
this something that that you know
anybody would be able to break how much
force do you think you're applying this
one yes it could be broken by anybody
same thing with like the knee five or
the
robbing so when I when I do my test I
start the bend and if it if it like
stops bending at one point like if the
battery flexes against the frame usually
that'll keep it from going any farther
but this phone had no stopping point it
just kept going all the way through and
just catastrophic we failed this device
when we did our teardown we really had a
hard time getting inside a much harder
time getting inside and you did
evidently yes and so we in order to get
in like there's all kinds of adhesive we
had to loosen it was really a
time-consuming process and the Nexus 6p
made by Huawei ended up getting a 2 out
of 10 repair school when I asked
manufacturers like why are you designing
these things and such a glued together
fashion they say well we have to in
order the pass are very rigorous drop
tests and and really to get the
durability that we're aiming for we want
to make it it's thin and light as
possible and we have to sacrifice repair
ability in order to make a durable phone
so what happened here you know I think
they tried to make this you know a
relatively durable phone they have a
relative pretty thick piece of metal
right here in the center of it the only
problem is is that on the edge of the
metal they joined it with plastic using
these little dovetail joints okay but
they took the back panel of the phone so
this is an important piece and this is
an important piece but they screwed it
directly into the plastic which is a
fragile piece so the reason this one
broke is because all of these little
dovetail joints snapped and then it just
you know kept going after that so what
they could have done is something like
like in the I pad where you have you
have these metal posts that are either
and in this case this this post was
actually soldered on but then you've got
these other screw holes where they
machined it out I wonder if that's a
more expensive machining process I think
I think there definitely is
cost-effectiveness going on because
working with metal is way more expensive
than working with plastic and with this
phone right here so this one's called
the next bit Robin I've never seen this
phone before yeah the premise behind
this is that it's a cloud-based phone so
there's little cloud image on the back
that most of your information is stored
on the cloud when you're not using it
but the thing with this phone is and why
this phone snapped is that there is ZERO
metal inside of this phone so every
screw hole is directly into the plastic
what are some things that you've learned
that would
enhance both durability and repair
ability durability and repair ability
the the battery has a lot to do with the
durability of the phone as far as
bending goes the more rigid the battery
is and also the the compartment that
holds the battery the more rigid that is
like the square frame around it the more
likely the phone is to not bend and
break well interesting well this is a
look at a whole bunch of phones that
have failed you can see tear downs of a
lot of these on iFixit and you can see
the Ben tests on jerry-rigged everything
yes and we're going to continue to be
taking some stuff apart and I think that
we've got a lot to learn from each other
because you've been doing some more like
extreme destructive analysis we do our
very careful engineering analysis and I
think combined we've got a lot to learn
yes we do stay tuned