Weird interference with my new radio

[EastCarolina]

I had a pioneer stereo installed about two weeks ago. I noticed some of my stations on my FM would come in with static and I first thought it was the antenna it's not. When I have the car turned on in auxiliary without the motor running I get great signals on every station I would expect to get. But with the motor running I only get good signals on stations that are very close with really strong signals. Also when I plug in my 12 V cell phone charger it interferes with the stereo really bad with the FM signal. I had it professionally installed using the correct harness yet it still sounds to me like a grounding issue???

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[The Camry]

Professionally installed doesnt mean anything these days. Whos to say they know what their doing?

If you think its a grounding issue. Find the black wire in the back of the head unit. Splice a wire into it and run that wire to a better ground.