Originally Posted by djk7

Planes falling out of the sky from electronic device use is a bit melodramatic, the concerns are really interference with navigational and communication equipment.

The Aviation Safety Reporting System is a database that contains a wide variety of entries, including many that pertain to Personal Electronic Devices. A PDF containing a sample of 50 of those is available here. This is just a sample set, the entire database can be searched if desired.

While many of these cases are just incidents of pax not turning off devices when requested, there are a few where interference with radios, ILS, and TCAS systems are at least suspected to have been caused by passenger electronics devices. ILS = Instrument landing system, TCAS = traffic collision avoidance system.