My Pebble Time Steel has been spontaneously turning on Pandora on my iPhone, too! It's been going on for about a month. It definitely happens, even when Pandora is completely closed, the volume is all the way down and my phone is on silent! The most embarrassing incident was during prayer at Mass, a couple of weeks ago. That was unacceptable. I doubt they'll be a fix for this problem, since there is no more support updating for Pebble. I'm very disappointed in that fact. So, I guess it's time to seriously find a new smartwatch.