Samsung SGH X820 Manual

Also see for SGH X820: Service manual

Drive safely at all timesDo not use a hand-held phone while driving. Park thevehicle first.Switch off the phone when refuellingDo not use the phone at a refuelling point (servicestation) or near fuels or chemicals.Switch off in an aircraftWireless phones can cause interference. Using them inan aircraft is both illegal and dangerous.Switch off the phone near all medical equipmentHospitals or health care facilities may be usingequipment that could be sensitive to external radiofrequency energy. Follow any regulations or rules inforce.InterferenceAll wireless phones may be subject to interference,which could affect their performance.ImportantsafetyprecautionsFailure to comply with the followingprecautions may be dangerous or illegal.