Porsha Williams Says Delta Flight Incident Was Over Phone Volume

Porsha Williams says the dramatic Delta Airlines flight incident that landed her on the FBI's radar started when the woman sitting next to her in first class complained about her listening to Instagram videos on her phone without headphones.

TMZ obtained police body camera footage from Porsha's interaction with cops Sunday at Hartsfield-Jackson Atlanta International Airport ... and she explains her side of the story.

Basically, Porsha says she was listening to videos on her phone with the volume up before the plane took off from Las Vegas and the passenger next to her asked if she had to listen to the IG video the whole flight.

Porsha says she asked the woman if she wanted to listen and told her there was a nice way to go about it ... and she says the woman flipped out, called her