Section 4A: Important Safety Information 233Important Safety InformationMaintaining Safe Use of and Access toYour PhoneDo Not Rely on Your Phone for Emergency CallsMobile phones operate using radio signals, which cannot guaranteeconnection in all conditions. Therefore you should never rely solely uponany mobile phone for essential communication (e.g., medicalemergencies). Emergency calls may not be possible on all cellular networksor when certain network services and/or mobile phone features are in use.Check with your local service provider for details.Using Your Phone While DrivingTalking on your phone while driving (or operating the phone without ahands-free device) is prohibited in some jurisdictions. Laws vary as tospecific restrictions. Remember that safety always comes first.Following Safety GuidelinesTo operate your phone safely and efficiently, always follow any specialregulations in a given area. Turn your phone off in areas where use isforbidden or when it may cause interference or danger.Using Your Phone Near Other Electronic DevicesMost modern electronic equipment is shielded from radio frequency (RF)signals. However, RF signals from wireless phones may affect inadequatelyshielded electronic equipment.RF signals may affect improperly installed or inadequately shieldedelectronic operating systems and/or entertainment systems in motorvehicles. Check with the manufacturer or their representative to determineif these systems are adequately shielded from external RF signals. Alsocheck with the manufacturer regarding any equipment that has beenadded to your vehicle.Consult the manufacturer of any personal medical devices, such aspacemakers and hearing aids, to determine if they are adequately shieldedfrom external RF signals.Tip: Purchase an optional hands-free accessory at your local Sprint Store, orcall the Sprint PCS Accessory HotlineSM at 1-800-974-2221 or by dialing#222 on your Sprint PCS Phone.