Will a ringing iphone on your belt fog film and/or paper in the darkroom? If, so would taping a piece of rubylith over it solve the problem?

I have a couple of film hanging clips that look like a standard wooden clothes pin, however on the end of one of the pieces you squeeze to open the clothes pin, these is a metal clip which I use to attach the cothes pin to a bar in my California Stainless film drying cabinet. Does anyone know where to get these or does anyone have any they would be willing to part with? Thank you, Bill Barber