Originally Posted by
chaadster
yes, we can have wifi when riding. Most phones can generate a wifi hotspot, or we could use another wifi hotspot, either standalone or the GPS head unit could generate it; I don’t think the tech is either uncommon or insurmountable.
Sure. I've even done it to download routes.
But, if you need another phone to use your cycle computer as a (crappier) phone, why not just use the other phone?
To do what you are suggesting, you'd need a more-expensive cycle computer, a second cell phone plan, and still be stuck needing to carry the other cell phone. That's certainly possible but it makes little sense.
Also, you need a good data connection, which isn't always available. Voice-only connections are still much-more available. Plus, VOIP (which is what you are talking about) requires a fairly fast computer (which would increase the price of the cycle computer). The WiFi cycle computers support doesn't need to be particularly fast. VOIP requires a fast connection.