I still have above keyboard problem.
I tried hints from https://leste.maemo.org/PinePhone
and I tried update firmware, but I get this when I try:
"Opening keyboard I2C device
WARNING: You may need to load the i2c-dev module (modprobe i2c-dev).
ERROR: open (/dev/i2c-2) failed: No such file or directory"

Also I have problem with 4G data connection, connection logo just blinking. Have somebody else same problem?