I left Android because I use it mostly while driving by plugging from the headphone jack to the input on the radio. This prompts Android to turn the volume down

I left Android because I use it mostly while driving by plugging from the headphone jack to the input on the radio. This prompts Android to turn the volume down to a level that is too low even with the radio volume cranked. If Android would stop doing that, I'd ditch my iPhone in a heartbeat.