Tone 2 pro with Android Phone

When I plug in the Tone 2 pro into my phone, which has a usb c port for heaphones, I get the android system message:- non-certified headphones plugged in, use certified to get better audio experience.
How do you get certified? Will this limit the sound quality?
Anyone have any ideas, is it with all phones or just mine?

Ignore this message and listen to music through your chosen player like Hibymusic, etc.