A:AnswerSome case’s the pop socket will not stick too it’s the material of the phone case Not the actual pop socket, on my case I had to super glue mine but on my wife’s phone case it holds great
A:AnswerYes!!! If you buy the car holder attachment, which I have and love; it will stay stable. They sell an attachment for the car, you can put anywhere you want to, and the Popsocket slides right in there. This feature is my favorite feature about the Popsockets. I would definitely check it out!