A:Answerunfortunetly playstation remote play only works with playstation controllers. however there are some third party apps that allow you to use playstation remote play with any controller.
A:Answerbecause of the position of the port on the fold 3 the kishi should fit it fine in folded mode and while it would also technically fit the unfolded mode the phone would sit awkwardly with the second half of the screen drooping below. however i would consult the kishis supported phone section and refrain from purchasing if the fold 3 is not included. some unsupported phones still work with the kishi but its not garenteed.
A:Answerthe razer kishis ports have the pins to support data transfer but i wouldnt recomend it as then the phone would have to power the drive through the kishi.