Compatibility with Nokia

[Dahn]

You say all Android OS 5.0 and  higher phones are compatible with your device. But Nokia (I for instant have an 8.1, this phone hase android Pie, 9.0, on it, But it doens't work.) isn't one of them, how is that?

[SteveH]

It's not "all" but "most" 

They say at www.fitbit.com/devices 

"Fitbit products are compatible with most devices that have the following operating systems: Apple iOS 10 and higher, Android OS 5.0 and higher, or Windows 10 v1607 or higher"

[Dahn]

So is fibit never going to spread into the market of nokia users?

[SteveH]

I've never known fitbit to let us know their plans so I'd be surprised if you get an answer to that.