I am genuinely curious what problem would be solved by having a bike computer that functions as a phone. I saw on bicycles.stackexchange.com someone asking if any bike computers have music players, which made me wonder the same thing.
Is the added weight of carrying a phone such a burden? Is it something else?
In the days before smartphones took off, Nokia made a handheld game console that was also a phone, although you looked ridiculous using it as a phone because of the way the speaker and mic were laid out. This question reminds me of that.
Sidetalking on the Nokia N-gage