I carry a smartphone and a small aux battery pack in my top tube bag and it's all neato. However, I am seeking a cycling computer that excels at navigation and maps to alleviate anxiety and stress, most particularly in non-planned travels that are considered out in the "boonies," often off road (with no cellular service), developing countries, etc.
Avg MPH, distance traveled, etc is nice plus, too. Thanks in advance for your help!