Safety precautions 67Ensure maximum battery and charger lifeAvoid charging batteries for more than a week, as overcharging may shorten battery life.•Over time, unused batteries will discharge and must be recharged before use.•Disconnect chargers from power sources when not in use.•Use batteries only for their intended purposes.•Use manufacturer-approved batteries, chargers, accessories and suppliesUsing generic batteries or chargers may shorten the life of your device or cause the device• to malfunction.Samsung cannot be responsible for the user’s safety when using accessories or supplies that• are not approved by Samsung.Do not bite or suck on the device or the batteryDoing so may damage the device or cause explosion.•If children use the device, make sure that they use the device properly.•When using the device:Speak directly into the mouthpiece.•Avoid contact with your device’s internal antenna. Touching the antenna may cause the• device to transmit more radio frequency than necessary.Hold the device with a relaxed grip, press the keys lightly, use special features that reduce• the number of keys you have to press (such as predictive text), and take frequent breaks.Protect your hearingExcessive exposure to loud sounds can cause hearing damage.•Exposure to loud sounds while driving may distract your attention and cause• an accident.Always turn the volume down before plugging the earphones into an audio• source and use only the minimum volume setting necessary to hear yourconversation or music.Do not store your device in hot or cold areas. Use your device at -20 °C to45 °CYour device can explode if left inside a closed vehicle, as the inside temperature can reach• up to 80 °C.Do not expose your device to direct sunlight for extended periods of time (such as on the• dashboard of a car).Store the battery at -20 °C to 45 °C.•Do not store your device with such metal objects as coins, keys andnecklacesYour device may become deformed or malfunction.•If the battery terminals are in contact with metal objects, it may cause a fire.•Do not store your device near magnetic fieldsYour device may malfunction or the battery may discharge from exposure to magnetic• fields.Magnetic stripe cards, including credit cards, phone cards, passbooks, and boarding passes,• may be damaged by magnetic fields.Do not use carrying cases or accessories with magnetic closures or allow your device to• come in contact with magnetic fields for extended periods of time.Do not store your device near or in heaters, microwaves, hot cookingequipment, or high pressure containersThe battery may leak.•Your device may overheat and cause a fire.•Do not drop your device or cause impacts to your deviceThe screen of your device may be damaged.•If bent or deformed, your device may be damaged or parts may malfunction.•Do not use a flash close to the eyes of people or animalsUsing a flash close to the eyes may cause temporary loss of vision or damage to the eyes.