Comment by rchaud

I had forgotten about FXTec. I think Clicks could be different though. For one thing they have already shipped keyboard accessories for the iPhone and the Moto Razr. The core technology is there. Additionally, a small company like Unihertz has shipped several variants of PKB phones reliably over the last few years.

The Fxtec Pro 1 tried to implement a sliding keyboard mechanism, which is mechanically complicated: the Palm Pre ran into problems with that design and the Blackberry Priv in 2015 discontinued that design after only one generation, switching back to integrated PKBs for the KeyOne and Key2.