Health and Safety Information 139Battery PrecautionsBattery Precautions• Avoid dropping the cell phone. Dropping it, especially on a hard surface, canpotentially cause damage to the phone and battery. If you suspect damage to thephone or battery, take it to a service center for inspection.• Never use any charger or battery that is damaged in any way.• Use the battery only for its intended purpose.• If you use the phone near the network's base station, it uses less power; talk andstandby time are greatly affected by the signal strength on the cellular networkand the parameters set by the network operator.• Follow battery usage, storage and charging guidelines found in the user’s guide.• Battery charging time depends on the remaining battery charge and the type ofbattery and charger used. The battery can be charged and discharged hundreds oftimes, but it will gradually wear out. When the operation time (talk time andstandby time) is noticeably shorter than normal, it is time to buy a new battery.• If left unused, a fully charged battery will discharge itself over time.• Use only Samsung-approved batteries and recharge your battery only withSamsung-approved chargers. When a charger is not in use, disconnect it from thepower source.• Do not use incompatible cell phone batteries and chargers. Some Web sites andsecond-hand dealers, not associated with reputable manufacturers and carriers,might be selling incompatible or even counterfeit batteries and chargers.Consumers should purchase manufacturer or carrier recommended products andaccessories.• Extreme temperatures will affect the charging capacity of your battery: it mayrequire cooling or warming first.• Do not leave the battery in hot or cold places, such as in a car in summer or winterconditions, as you will reduce the capacity and lifetime of the battery. Always try tokeep the battery at room temperature. A phone with a hot or cold battery maytemporarily not work, even when the battery is fully charged. Li-ion batteries areparticularly affected by temperatures below 0 °C (32 °F). The battery should not becharged at temperatures below 0 degrees C (32 degrees F) or above 45 degrees C(113 degrees F).• Do not place the phone in areas that may get very hot, such as on or near acooking surface, cooking appliance, iron, or radiator.• Do not get your phone or battery wet. Even though they will dry and appear tooperate normally, the circuitry could slowly corrode and pose a safety hazard.