The Temp. field always shows 3 dashes, no reading --- For example, the stock Ski Activity, main screen has Temp. as one of the four fields on the first screen. I skied all day and never saw a temperature displayed. Also, if I create an activity and add Temp. to one of the data screens, it always shows ---. I understand the Vivoactive 4 has an internal temperature sensor that won't necessarily measure ambient air temperature. But shouldn't it be displaying a reading, not "---"? I do not have an external sensor like a "tempe", but understood the internal temperature sensor reading would be displayed. Do I have a faulty watch, or is there something I need to do to make this work?