Huawei FC8021 User Guide - Page 14

 Some wireless devices may affect the performance of hearing aids. For any such problems, consult your service provider. Potentially Explosive Atmosphere Power off your device in any area with a potentially explosive atmosphere, and comply with all signs and instructions. Areas that may have potentially explosive atmospheres include the areas where you would normally be advised to turn off your vehicle engine. Triggering of sparks in such areas could cause an explosion or a fire, resulting in bodily injuries or even deaths. Do not power on your device at refueling points such as service stations. Comply with restrictions on the use of radio equipment in fuel depots, storage, and distribution areas, and chemical plants. In addition, adhere to restrictions in areas where blasting operations are in progress. Before using the device, watch out for areas that have potentially explosive atmospheres that are often, but not always, clearly marked. Such locations include areas below the deck on boats, chemical transfer or storage facilities, and areas where the air contains chemicals or particles such as grain, dust, or metal powders. Ask the manufacturers of vehicles using liquefied petroleum gas (such as propane or butane) whether this device can be safely used in their vicinity. Traffic Security Observe local laws and regulations while using the device. In addition, if using the device while driving a vehicle, comply with the following guidelines:  Concentrate on driving. Your first responsibility is to drive safely.  Do not talk on the device while driving. Use hands-free accessories. 12