V3 Pro uses the Dprofy app for GPS setup and supported golf functions. GR20 works with a compatible smartphone and the app. V7M PLUS and V3M do not need the Dprofy app for ordinary Bluetooth music playback. See app and setup details.
Will GM16 fit my phone and golf cart?
Check your phone and case dimensions against the product’s fit information. GM16 needs a suitable steel mounting surface; not every cart component is magnetic. Check GM16 compatibility.