Drive safely at all times Do not use a hand-held phone while driving. Park the vehicle first. Switch off the phone when refuelling Do not use the phone at a refuelling point (service station) or near fuels or chemicals. Switch off in an aircraft Wireless phones can cause interference. Using them in an aircraft is both illegal and dangerous. Switch off the phone near all medical equipment Hospitals or health care facilities may be using equipment that could be sensitive to external radio frequency energy. Follow any regulations or rules in force. Interference All wireless phones may be subject to interference, which could affect their performance.