56VehiclesRF signals may affect improperly installed or inadequately shielded electronic systems in motorvehicles such as electronic fuel injection systems, electronic anti-skid (anti-lock) brakingsystems, electronic speed control systems, and air bag systems. For more information, checkwith the manufacturer, or its representative, of your vehicle or any equipment that has beenadded. Only qualified personnel should service the device, or install the device in a vehicle.Faulty installation or service may be dangerous and may invalidate any warranty that mayapply to the device. Check regularly that all wireless equipment in your vehicle is mounted andoperating properly. Do not store or carry flammable liquids, gases, or explosive materials in thesame compartment as the device, its parts, or enhancements. For vehicles equipped with anair bag, remember that air bags inflate with great force. Do not place objects, including installedor portable wireless equipment in the area over the air bag or in the air bag deployment area. Ifin-vehicle wireless equipment is improperly installed, and the air bag inflates, serious injurycould result. Using your device while flying in aircraft is prohibited. Switch off your devicebefore boarding an aircraft. The use of wireless teledevices in an aircraft may be dangerous tothe operation of the aircraft, disrupt the wireless telephone network, and may be illegal.Potentially explosive environmentsSwitch off your device when in any area with a potentially explosive atmosphere and obey allsigns and instructions. Potentially explosive atmospheres include areas where you wouldnormally be advised to turn off your vehicle engine. Sparks in such areas could cause anexplosion or fire resulting in bodily injury or even death. Switch off the device at refueling pointssuch as near gas pumps at service stations. Observe restrictions on the use of radioequipment in fuel depots, storage, and distribution areas; chemical plants; or where blastingoperations are in progress. Areas with a potentially explosive atmospheres are often, but notalways, clearly marked. They include below deck on boats, chemical transfer or storagefacilities, vehicles using liquefied petroleum gas (such as propane or butane), and areas wherethe air contains chemicals or particles such as grain, dust or metal powders.Follow any restrictions. Do not use the device where blasting is in progress.Emergency callsImportant: Wireless phones, including this device, operate using radio signals, wirelessnetworks, landline networks, and user-programmed functions. Because of this, connections inall conditions cannot be guaranteed. You should never rely solely on any wireless device foressential communications like medical emergencies.If certain features are in use, you may first need to turn those features off before you can makean emergency call. Consult this guide or your service provider for more information.When making an emergency call, give all the necessary information as accurately as possible.Your wireless device may be the only means of communication at the scene of an accident. Donot end the call until given permission to do so.Taking care of your smartphone1. DO take care not to scratch the screen of your smartphone. Keep the screen clean. Whenworking with your smartphone, use your finger or fingernail. Never use an actual pen orpencil or other sharp object on the screen surface.2. DO NOT expose your smartphone to rain or moisture. Do not let water enter the circuitrythrough the front panel buttons or expansion slots. In general, treat your smartphone as youwould a mobile phone or other small electronic device.