4A. Important Safety Information 193 Important Safety Information It’s best to replace the battery when it no longer providesacceptable performance. It can be recharged hundreds oftimes before it needs replacing. Don’t store the battery in high temperature areas for longperiods of time. It’s best to follow these storage rules: Less than one month:-4° F to 140° F (-20° C to 60° C) More than one month:-4° F to 113° F (-20° C to 45° C)Disposal of Lithium Ion (Li-Ion) BatteriesDo not handle a damaged or leaking Li-Ion battery as you canbe burned.For safe disposal options of your Li-Ion batteries, contact yournearest Sprint authorized service center.Special Note: Be sure to dispose of your battery properly. Insome areas, the disposal of batteries in household or businesstrash may be prohibited.Radio Frequency (RF) EnergyUnderstanding How Your Phone OperatesYour phone is basically a radio transmitter and receiver. Whenit’s turned on, it receives and transmits radio frequency (RF)signals. When you use your phone, the system handling yourcall controls the power level. This power can range from 0.006watt to 0.2 watt in digital mode.Knowing Radio Frequency SafetyThe design of your phone complies with updated NCRPstandards described below.In 1991–92, the Institute of Electrical and Electronics Engineers(IEEE) and the American National Standards Institute (ANSI)joined in updating ANSI’s 1982 standard for safety levels withrespect to human exposure to RF signals. More than 120scientists, engineers and physicians from universities,government health agencies and industries developed thisupdated standard after reviewing the available body ofresearch. In 1993, the Federal Communications Commission(FCC) adopted this updated standard in a regulation. In August1996, the FCC adopted hybrid standard consisting of theexisting ANSI/IEEE standard and the guidelines published bythe National Council of Radiation Protection andMeasurements (NCRP).Body-Worn OperationTo maintain compliance with FCC RF exposure guidelines, ifyou wear a handset on your body, use a Sprint-supplied orSprint-approved carrying case, holster or other body-wornaccessory. If you do not use a body-worn accessory, ensurethe antenna is at least 7/16 inch (1.5 centimeters) from yourbody when transmitting. Use of non-Sprint-approvedaccessories may violate FCC RF exposure guidelines.For more information about RF exposure, visit the FCC websiteat www.fcc.gov.M580.book Page 193 Wednesday, September 21, 2011 4:52 PM
