I gave up on the Strava app ages ago, due to it crashing. Now use either a Garmin for long rides, or the MyTracks android app. This app is the resurrected version of the previous Google app - it seems reliable, and uses little battery. Post ride one 'exports' file, then I share it to my email, download gpx, and manually upload to Strava. Also has benefit of a standalone gpx file record of ride (without having to export from Stava).