They should just make two phones then, one small and thick, and one large and slick … (That doesn’t sound right :D).
For me, smaller is (more) mobile didn’t prove right. I think it boils down to what you do with and what you expect from your devices. And that determines what kind of device you actually need. And ppl and their needs are different and so is the device they need.
I travel a lot and I need to be productive on the go. So mobility is important to me. I used to have to carry around 3 devices, smartphone, tablet, laptop, targeted at different needs, and of course, each one required their own adapters, power bricks, peripherals. Although all these devices claim to be mobile, I wouldn’t call that mobile or user friendly.
Switching to a larger phone eliminated the need to carry a tablet around. I currently have the note 8, and for me that hits the sweet spot between mobility and usability. It’s large enough to do anything I could do with the tablet, including watching movies, reading books and papers, writing mails or other text, you name it. And it’s still small enough to fit in my pocket and to be comfortably usable. I have no problems using it with one hand and can cover the whole display surface with my thumb. Although I admit,that can get uncomfortable and tiresome, but for anything productive like writing mails etc, I use two hands anyway, and in that case, again, a smaller screen gets in the way.
While the phone itself is arguably less mobile than a smaller phone, it’s also more functional, at least for the functions I require. And with that I could eliminate one additional device, which in turn increased the overall mobility significantly. If one device sacrifices functionality in favor of mobility, thus forcing you to carry another device to compensate, that leads to overall less mobility, not more.
Thats why I wish for a larger Purism phone. The Linux / Gnome / convergence thing is exactly what I need and what I want. And I want to be able to use it productively for a lot of different use cases, many of which require a good amount of screen space.
I also hope that they can speed up their Librem 11 development and production and that it will get a proper USB-C implementation. Librem 11 + Librem 5 + USB-C = winning :D. One charger, one dock, two compatible devices, that could significantly reduce the amount of crap I have to carry around each day.
But I can understand if all you need is a phone for calls and occasional texting / surfing, than smaller is better is more mobile. But then again, I think, a phone targeted at productivity, with proper Linux, proper window manager, convergence, and quite a lot of horse power, is not what you need.