Have been given a Wahoo cadence sensor which operates wirelessly through Bluetooth. However recently discovered that my existing mobile phone Samsung S3mini is not compatible. My step sons Samsung J3 appears to be compatible in that it will at least download the app and recognise the cadence sensor. I am therefore thinking of upgrading my phone for a Samsung J5. However before I lash out the cash it would be good to hear from anyone who currently uses this combination.