I've had a hard time nailing the problems down to one particular piece of gear, one set of mics, one set of cables, or even one phone or service type.... I've observed the cell phone interference problem for quite a few years though across a myriad of gear types. I think it is generally just good policy to, at the VERY least, just turn your ringer off....
I think active cables though are more prone to interference than other types of cables, gear etc.... though ymmv.....