preslove
Lifer
- Sep 10, 2003
 
- 16,754
 
- 64
 
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FWIW, one of the first questions Garmin International technical support will ask if you report an intermittent failure of one of their aviation GPS Navs is, "Did anyone in the plane not turn off their iPhone?" Cellphone interference with GPS in aircraft is a documented problem, in part because as the aircraft gains altitude the cellphone ramps up its transmitter power to maintain contact with the increasingly distant cell towers. Spurious emissions in the GPS frequency band increase at the same rate as the nominal cell frequency.
Airplane mode would prevent this, correct?
				
		
			