I have an XZ1 Compact. It's great, works really well, appealing design, every feature I need - decent screen, headphone jack, camera button, fingerprint reader, feels fast, battery lasts for ages. It's an almost perfect phone. Just one problem: it's too big.

Not by that much, but it definitely is. It's too big to use well one-handed, and it doesn't fit comfortably in a lot of pockets, especially since the corners are pointy.

The perfect phone form factor - and this must surely have been plain to anyone who ever held one - was the Nokia Lumia 620, a Windows phone with 3.8" screen and a curvy back with exchangable double-shot plastic covers. It was a bit like an iPhone 3GS in shape but lighter and with a marginally bigger screen. The phone itself was a bit crap in various ways, but how strange that we should collectively ignore the obvious rightness of this design and go on making them worse and worse for years afterwards. (I'm being flippant, but somewhere in my head I am puzzled by it all)

Agreed, the size is perfect and I find it sturdier then Z3 Compact. Aren't there more people like us to justify compact line?