It has happened on more than one occasion and and getting to dump my Garmin forerunner 35. Yesterday the 29th of August I logged over 8 miles and a total of about 37,000 steps which appeared on the connect but only totaled 80 steps. I saw the data of 37,000 steps on the device so I thought it would sync. It finally sync but only registered 517 steps total for the whole of August the 29. Seriously. What the heck does that mean. It has happened in the past which I thought might be a glitch now this. Aah something is definitely wrong with the device.