They may not cause planes to fall out of the sky but...
The WestWinds flying on the nightshifts SY-ML, ML-AD, SY-AD etc obviously had girlfriends/wives/mistresses who kept late hours as well. Most nights at least one of their calls would be accompanied by the static from their operating mobile. I don't know about the Lap tops but I wouldn't be surprised if mobile phones screw around with all sorts of things. Recieving a call just now sitting at the computer has caused the static sound to come through the speakers. Not an engineer so not qualified to have an opinion though.