My Android unit has occasionally had issues all in the last year. Once during a snow storm (Coincidence?) the sound crackled like mini spark sounds. Didn't happen again.
A few times after driving a while when I restarted the screen would be blank. It would work after cooling down
Yesterday I had the coolant flushed and the shop had the heat way up to verify everything working. No sound since then.
I have replaced the 3 associated fuses all in different boxes. Jiggled wires, etc
Next step is a factory reset and if that doesn't work try the stock radio and see if that works
I don't believe in coincidences, but could the factory amp have gone bad? Is there an easy way to bypass the amp to see? May be a moot question after I swap the factory stereo back in.
If it is the unit, then I will be looking for a newer Android, maybe some of the irritating things like can't use my phone hot spot, no Android Auto (Mirror link program). etc. I sent EC Offroad and email with a few questions. Seems like Phoenix is the same unit though without some minor customizations from EC Off Road. Anyone have one of the newer ones with Android 10 or 11? Good topic to add to this combined FAQ thread