Heart rate monitor - first use

I used my new Polar H7 heart rate monitor on this morning's long run. It worked great, despite initially not detecting my heart beat. But once I began to sweat a bit, it connected up and reported my heart beat the rest of the way. I was glad that the Strava app connected to it without a problem. In researching this particular monitor, I had not found anyone using it with the same phone as I. But it's working fine with my Motorola Droid Turbo.