90Potentially Explosive EnvironmentsSwitch your mobile device off when in any areawith a potentially explosive atmosphere and obeyall signs and instructions. Sparks in such areascould cause an explosion or fire resulting inbodily injury or even death. Users are advised toswitch the mobile device off while at a refuelingpoint (service station).Users are reminded of the need to observerestrictions on the use of radio equipment in fueldepots (fuel storage and distribution areas),chemical plants, or where blasting operationsare in progress. Areas with a potentiallyexplosive atmosphere are often, but not always,clearly marked. They include below deck onboats, chemical transfer or storage facilities,vehicles using liquefied petroleum gas (such aspropane or butane), areas where the air containschemicals or particles, such as grain, dust, ormetal powders, and any other area where youwould normally be advised to turn off yourvehicle engine.When your Device is WetDo not turn on your device if it is wet. If yourdevice is already on, turn it off and remove thebattery immediately (if the device will not turn offor you cannot remove the battery, leave it as-is).Then, dry the device with a towel and take it to aservice center.FCC Hearing Aid Compatibility(HAC) Regulations for WirelessDevicesThe U.S. Federal Communications Commission(FCC) has established requirements for digitalwireless mobile devices to be compatible withhearing aids and other assistive hearing devices.When individuals employing some assistivehearing devices (hearing aids and cochlearimplants) use wireless mobile devices, they maydetect a buzzing, humming, or whining noise.Some hearing devices are more immune thanothers to this interference noise, and mobiledevices also vary in the amount of interferencethey generate.The wireless telephone industry has developed arating system for wireless mobile devices toassist hearing device users find mobile devicesthat may be compatible with their hearingdevices. Not all mobile devices have been rated.Mobile devices that are rated have the rating ontheir box or a label located on the box.The ratings are not guarantees. Results will varydepending on the user's hearing device andhearing loss. If your hearing device happens tobe vulnerable to interference, you may not beable to use a rated mobile device successfully.Trying out the mobile device with your hearingdevice is the best way to evaluate it for yourpersonal needs.