I do that as well, usually for shorter commuting rides. For the longer stuff I like using my iPhone as an aid to navigation with Strava as well as keep track of heart rate. Also use it to monitor my Varia radar for vehicular traffic approaching from behind.

Curious this. I have a Series 7 Apple watch, tricky sending HR from it to anything else via BTLE. I've been using a Wahoo Trackr for over a year, never yet failed to deliver the data it provides.

Older Wahoo chest strap devices I understand cost about half what this newer one does but could be problematic in their performance. I've heard that Polars are supposed to be about the best but then I've also read of problems with those so it's kind of a mixed bag when it comes to finding something that works.

What surprised me most yesterday was that before, when I'd inadvertently swiped Strava closed on my iPhone, if I immediately re-started it it would pick up where I'd closed it without a hitch. Yesterday it seemed as though it simply re-started by itself after regaining signal. I've posted a query to Strava support, yet to hear anything back in reply.