I’m not a dwarf, but I do have smaller than average hands and really struggle to type on a phone one handed. I dropped my phone a lot trying to balance it.
Have you come across pop sockets? Small collapsible self-adhesive handles for the back of your phone. They’ve made an absolutely massive usability difference to my phone usage (although I aim for the smallest handset I can get without compromising too much on quality anyway). Total game changer
I tried pop sockets on the phones of my friends, my fingers are too small and stubby that I felt I would drop the phone more by fiddling with it so I didn't use them.
Btw checkout Swiftkey's one-hand mode for typing, If you haven't already.
Have you come across pop sockets? Small collapsible self-adhesive handles for the back of your phone. They’ve made an absolutely massive usability difference to my phone usage (although I aim for the smallest handset I can get without compromising too much on quality anyway). Total game changer