@robyn @alphapuggle I concur, but I don't think it's a matter of processing power. I believe the "fancy" UI works by essentially hijacking the Bluetooth API. In other words, the UI is not fully built into the firmware; I think it sort of sits on top and pretends to be a Bluetooth connection.
@robyn @alphapuggle oops! Just saw you mentioned the regular UI, not the fancy UI.
I take back what I said.