Started with Mapillary App on Android, got not so impressive results and stopped in 2017.
Borrowed a GoPro Hero 5 session in mid 2019 and continued to upload to Mapillary with way better results compared to the smartphone app.
In mid 2020 a GoPro Hero 8 Black was purchased to minimise the processing time after capturing. As the Hero 8 Black is still relatively new on the market, not all things are running as expected. Time will tell.