I still prefer when the phone has an integrated keyboard [1]. Less battery drain due to bluetooth, more convenient since you don't loose screen real estate, and your muscle memory develops in no time.
Too bad the marked decided they didn't want this form factor anymore.
[1] http://g-ecx.images-amazon.com/images/G/01/wireless/detail-p...
I know what you mean, I have tried to code on my phone far too often!
Wireless keyboard for smart phones aren't new, though. This one is convenient, but you can use existing wireless keyboard with just about any iOS device: https://support.apple.com/en-us/HT202041
It's obviously no mechanical keyboard, but it's a full sized keyboard none the less, and it allows you to enter large amounts of text into your smartphone much easier than what was previously offered.
I would call that a major improvement in the keyboard arena, not a mediocre typing experience.
The limited rate of data entry was what pulled me away from owning a smartphone. I have a dumbphone and I use my laptop for all my serious work. It's nearly impossible to write code on any smartphone out there as of yesterday. But today I would consider getting a smartphone to actually work on. Probably with an HDMI output on it, too. Just in case.