Health and Safety Information169SAR tests are conducted using standard operatingpositions with the phone transmitting at its highestcertified power level in all tested frequency bands.Although the SAR is determined at the highestcertified power level, the actual SAR level of thephone while operating can be well below themaximum value. This is because the phone isdesigned to operate at multiple power levels so asto use only the power required to reach thenetwork. In general, the closer you are to a basestation, the lower the power output of the phone.Precautions When Using Batteries• Never use any charger or battery that is damagedin any way.• Use the battery only for its intended purpose.• If you use the phone near the network’s basestation, it uses less power; talk and standby timeare greatly affected by the signal strength on thecellular network and the parameters set by thenetwork operator.• 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 willgradually wear out. When the operation time(talk time and standby time) is noticeably shorterthan 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-