Play along - create a PinePhone keyboard

[keyboardist]

It's open source licensed, it had several production iterations already, and it's similar to BlackBerry keyboards (which are generally better than the Nokia keyboard mentioned in requirements).

The F1-F4 buttons could be put to sides to make 6 rows into 5. Note also, that the "narrowness" of the keyboard should be preserved even if more space is available on PinePhone. Otherwise it'd harm ergonomy a lot (don't underestimate this!).

Btw. do you plan to have the keyboard touch sensitive for scrolling etc. like BlackBerry/Unihertz? It's an extremely useful feature highly increasing keyboard productivity right on touch devices (it avoids leaving the keyboard and feels really seamless).

https://github.com/betrusted-io/betruste...ter/kbd-v3

(all credit goes to Andrew "Bunnie" Huang)

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There are also other interesting designs which has proven slightly better than the Nokia design - e.g. Unihertz Titan. But there are no designs available under open source licenses (though the design itself is not patented and itself is to my knowledge made in a way which is not infringing any BlackBerry patents).