simcor:
Getting a USB radio to work with any phone via USB is very hit and miss. Most times you will get “DEV ERR”.
It depends on the protocol used 99%of the time.A USB stick with music on should work OK though.
Every radio I have used with a USB socket doesn’t work with any android phone I’ve had.
Unless it specifically has for iPhone or android on it chances of getting it to work are slim.
Two weeks ago I was in a billy bob basic Scania P series rigid and the radio in that recognised my iPhone 8 via USB. Showed up as iPod on the screen. It was a 17 plate though. Might be because it’s a relatively new unit.