French here, living in Dijon, a regional major city, 2 hours from Paris. I live in city center, and I still only listen to downloaded content in my spotify app, because if I listen to it online while on the move, there's always a point when it will lag or just stop.

Providers tell the whole city is covered by 4g. In reality, as soon as you move, sometime you'll have it, sometime you won't. Friends report the same thing in other cities with other providers.