Samsung SGH-X640 Manual

Also see for SGH-X640: User guide Service manual Service manual

Contents

Health and safety information172• Battery charging time depends on the remainingbattery charge and the type of battery andcharger used. The battery can be charged anddischarged hundreds of times, but it will graduallywear 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 willdischarge itself over time.• Use only Samsung-approved batteries andrecharge your battery only with Samsung-approved chargers. When a charger is not in use,disconnect it from the power source. Do not leavethe battery connected to a charger for more thana week, since overcharging may shorten its life.• Extreme temperatures will affect the chargingcapacity of your battery: it may require cooling orwarming first.• Do not leave the battery in hot or cold places,such as in a car in summer or winter conditions,as you will reduce the capacity and lifetime of thebattery. Always try to keep the battery at roomtemperature. A phone with a hot or cold batterymay temporarily not work, even when the batteryis fully charged. Li-ion batteries are particularlyaffected by temperatures below 0 °C (32 °F).• Do not short-circuit the battery. Accidental short-circuiting can occur when a metallic object (coin,clip or pen) causes a direct connection betweenthe + and . terminals of the battery (metal stripson the battery), for example when you carry aspare battery in a pocket or bag. Short-circuitingthe terminals may damage the battery or theobject causing the short-circuiting.Health and safety information173• Dispose of used batteries in accordance with localregulations. Always recycle. Do not dispose ofbatteries in a fire.Road safetyYour wireless phone gives you the powerful abilityto communicate by voice, almost anywhere,anytime. But an important responsibilityaccompanies the benefits of wireless phones, onethat every user must uphold.When driving a car, driving is your firstresponsibility. When using your wireless phonebehind the wheel of a car, practice good commonsense and remember the following tips.1. Get to know your wireless phone and itsfeatures, such as speed dial and redial. Ifavailable, these features help you to place yourcall without taking your attention off the road.2. When available, use a hands-free device. Ifpossible, add an extra layer of convenience andsafety to your wireless phone with one of themany hands-free accessories available today.3. Position your wireless phone within easy reach.Be able to access your wireless phone withoutremoving your eyes from the road. If you get anincoming call at an inconvenient time, let yourvoice mail answer it for you.4. Let the person you are speaking with know youare driving; if necessary, suspend the call in