part of the issue with many of these Android head units, is the hardware.
Many use inferior spec hardware compared to head units from known sources (Pioneer, Kenwood, Alpine etc.)
Next will be...
that does sound like a grounding issue.
How long is your ground wire?
How about your RCA wire, is it ran along side the remote wire? If so, try moving them away from each other.
It could...
I am Medically retired from the Air Force, and owner/operator of Audio Alchemy, a car audio and electronics shop in Abilene, Texas. I'm still hoping to get back to Michigan one day, but that day is not today nor is it tomorrow. Yet.
Location:
Abilene, Texas
Interests:
My business, my car, investing, movies, books, etc.
Occupation:
Audio Alchemy, Owner
System:
Head Unit: JVC KW-AVX830; EQ/Processor: JBL MS-8; Amps: Diamond Audio D600.4 (x2), Diamond Audio D1100.1, RE Audio 500.2; Front tweeter: Vifa XT25SC90-04; Front Midrange: Dayton RS125-4; Front Midbass: Morel MW-266; Center: Dayton Audio RS-100-8; Rea