168 Section 4A. Important Safety InformationTurning Off Your Phone in Dangerous AreasTo avoid interfering with blasting operations, turn your phoneoff when in a blasting area or in other areas with signsindicating two-way radios should be turned off. Constructioncrews often use remote-control RF devices to set off explosives.Turn your phone off when you’re in any area that has apotentially explosive atmosphere. Although it’s rare, your phoneand accessories could generate sparks. Sparks can cause anexplosion or fire, resulting in bodily injury or even death. Theseareas are often, but not always, clearly marked. They include: Fueling areas such as gas stations. Below deck on boats. Fuel or chemical transfer or storage facilities. Areas where the air contains chemicals or particles suchas grain, dust, or metal powders. Any other area where you would normally be advised toturn off your vehicle’s engine.Restricting Children’s Access to Your PhoneYour phone is not a toy. Do not allow children to play with it asthey could hurt themselves and others, damage the phone ormake calls that increase your Sprint invoice.Using Your Phone With a HearingAid DeviceYour phone has been tested for hearing aid devicecompatibility. When some wireless phones are used withcertain hearing devices (including hearing aids and cochlearimplants), users may detect a noise which can interfere with theeffectiveness of the hearing device.Some hearing devices are more immune than others to thisinterference noise, and phones also vary in the amount ofinterference noise they may generate. ANSI standard C63.19was developed to provide a standardized means of measuringboth wireless phone and hearing devices to determine usabilityrating categories for both.Ratings have been developed for mobile phones to assisthearing device users find phones that may be compatible withtheir hearing device. Not all phones have been rated forcompatibility with hearing devices. Phones that have beenrated have a label located on the box. Your M520 phone bySamsung has an M4 rating.These ratings are not guarantees. Results will vary dependingon the user’s hearing device and individual type and degree ofhearing loss. If a hearing device is particularly vulnerable tointerference noise; even a phone with a higher rating may stillcause unacceptable noise levels in the hearing device. TryingNote Never transport or store flammable gas, flammable liquids,or explosives in the compartment of your vehicle thatcontains your phone or accessories.M520_Sprint.book Page 168 Thursday, September 18, 2008 12:34 PM