The main problem with the Cell phone theory is that the Colony Collapse Disorder would have happened in the UK a few years before the US as the Cellular Technology infrastructure has been in place in greater density and for a longer period within the UK.

I used to work for a company that designed and manufactured the microwave components that went into the Seimens, Ericsson and Nokia Cellular base stations (also military and NASA microwave communications components also). Most of the excutives and top engineers who work for these companies limited their use or do not own their own products.

I'm sure it won't take long before someone blames the mysterious goings on at that most secretive of establishments in Alaska run by the US military for the demise of the Bees. You know that part of Alaska on Google earth near the Canadian Border, which is completely Blacked Out for some apparent reason.