Samsung Serene User Manual

76Understanding How YourPhone OperatesYour phone is basically a radiotransmitter and receiver. Whenit's turned on, it receives andtransmits radio frequency (RF)signals. When you use yourphone, the system handlingyour call controls the powerlevel. This power can rangefrom 0.006 watts to 0.2 wattsin digital mode.Maintaining Your Phone'sPeak PerformanceFor the best care of your phone,only authorized personnelshould service your phone andaccessories. Faulty service mayvoid the warranty.There are several simpleguidelines to operating yourphone properly and maintainingsafe, satisfactory service.• Hold the phone with theantenna raised, fully-extended and over yourshoulder.• Try not to hold, bend ortwist the phone's antenna.• Don't use the phone if theantenna is damaged.• Speak directly into thephone's receiver.• Avoid exposing your phoneand accessories to rain orliquid spills. If your phonedoes get wet, immediatelyturn the power off andremove the battery. If it isinoperable, call CustomerCare for service.Availability of VariousFeatures/Ring TonesMany services and features arenetwork dependent and mayrequire additional subscriptionand/or usage charges. Not allfeatures are available forpurchase or use in all areas.Downloadable Ring Tones maybe available at an additionalcost. Other conditions andrestrictions may apply. See yourservice provider for additionalinformation.Battery Standby and TalkTimeStandby and talk times will varydepending on phone usagepatterns and conditions. Batterypower consumption depends onfactors such as networkconfiguration, signal strength,operating temperature, featuresselected, frequency of calls, andvoice, data, and otherapplication usage patterns.Battery Precautions