I haven't had any cell phone interference, but I did get some the other day while flying at my house. I was flying my Dazzler on channel 58 and it started rolling and throttled up on its own. About that time an 18 wheeler came up the hill in front of my house. Fortunately I was up high and got control back after he dropped over the next hill. I'm pretty sure his CB radio or linear amplifier was probably the culprit as I haven't had any more problems since.