[j.p.s]

Originally Posted by meeera

all have a paper-thin glass substrate. The past device Kobo Forma had a flexible substrate

Originally Posted by Shohreh

By "heavy-duty", I meant a device strong enough so that its screen doesn't break while travelling.

Paper-thin glass substrates are subject to shattering when the frame has been slightly flexed, as opposed to being dropped or some impact. A flexible substrate makes that less likely.

Originally Posted by meeera

Well, no screen will spontaneously shatter itself, short of an unusual issue like a swelling battery. It all depends how rough you are on them. For example, I've not managed to break a Kobo in a decade of having them and travelling with them, but some other people seem to break them one after the other while claiming that they couldn't possibly have broken them.

I think it has been a very long time since any e-ink device has been called out as being more prone to breakage than normal.

The metal Oasis models with glass front surface give the impression of being exceptionally rigid and strong, but I don't know whether that is actually the case.

I am also at a loss as to why some people experience breakage in device after device.