The fact that the speaker grill popped out can indicate any number of things happened. Perhaps the inertia of impact overcame the strength of the bond, indicating either a lot of inertia or a poor bond. Or the surface the grill was bonded to was deformed to the point that the bond failed, which says the casing failed in some way. However all we saw was a grill popping off and nothing more. It's impossible to tell from the evidence, and the blogger was more interested in a show than analysis.
All true. But it is possible to calculate the force of impact of an object falling from a given height and with a given acceleration. I expected, right or wrong, that the design engineers would have chosen an adhesive that would prevent a failure from double waist height plus a large safety factor regardless of impact point and angle. That, to me, is the minimum bar at which I would consider the phone to be a "durable" unit. Well, at least it's one factor.
Yes, the failure could have been a peel failure instead of a sheer failure, but that doesn't seem to be the case, as I would expect the grill to be bent beyond yield. It's not strictly necessary for that to be the result, but if the deformity required to break the bond is less than that required to make the grill yield, then I'm right back to the conclusion of a poorly chosen glue anyway.
Yes, it takes a specific class of glues to bond polycarbonate to aluminum well, but they do exist as I've already said. As an example, Lotus glued the glass reinforced polycarbonate crash structure to an aluminum bulkhead in my car.Wanna know what the crash structure removal process is should it be damaged? Grind it off. The amount of physical force that would be required to make the bond fail is way more than can be applied without permantly mangling the bulkhead and chassis of the car.
Of course that example has many flaws as an analogy to a phone because of so many different design and manufacturing criteria variables, but it does make the point. Better glues exist for the application than that which was chosen.
Now you can claim that's all just my opinion if you want, but even so my conclusion still stands, which again was that the durability or build quality isn't as good as I expected.
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