Very satisfied with my Apple Watch Sport, but I have an issue with the step counting. Before, when I just tracked my steps with my iPhone, the results were quite accurate. Now, when using the Watch, it keeps counting steps when I sit down and when I walk my Watch counts at least two times more than actual steps taken, if not more! Anybody else with the same problem and maybe with a solution as well? And yes, it's already calibrated. Hopefully this will be fixed in a software update!!