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The battery may need recharging if it has not been used for 
a long period of time.
It’s best to replace the battery when it no longer provides 
acceptable performance. It can be recharged hundreds of 
times before it needs replacing.
Don’t store the battery in high temperature areas for long 
periods 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) Batteries
 
Do not handle a damaged or leaking Li-Ion battery as you can 
be burned.
For safe disposal options of your Li-Ion batteries, contact your 
nearest Sprint authorized service center.
Special Note
: Be sure to dispose of your battery properly. In 
some areas, the disposal of batteries in household or business 
trash may be prohibited.
Radio Frequency (RF) Energy
Understanding How Your Phone Operates
 
Your phone is basically a radio transmitter and receiver. When 
it’s turned on, it receives and transmits radio frequency (RF) 
signals. When you use your phone, the system handling your 
call controls the power level. This power can range from 0.006 
watt to 0.2 watt in digital mode.
Knowing Radio Frequency Safety
 
The design of your phone complies with updated NCRP 
standards 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 with 
respect to human exposure to RF signals. More than 120 
scientists, engineers and physicians from universities, 
government health agencies and industries developed this 
updated standard after reviewing the available body of 
research. In 1993, the Federal Communications Commission 
(FCC) adopted this updated standard in a regulation. In August 
1996, the FCC adopted hybrid standard consisting of the 
existing ANSI/IEEE standard and the guidelines published by 
the National Council of Radiation Protection and 
Measurements (NCRP).
Body-Worn Operation
 
To maintain compliance with FCC RF exposure guidelines, if 
you wear a handset on your body, use a Sprint-supplied or 
Sprint-approved carrying case, holster or other body-worn 
accessory. If you do not use a body-worn accessory, ensure 
the antenna is at least 
7/16 inch
 (
1.5 centimeters
) from your 
body when transmitting. Use of non-Sprint-approved 
accessories may violate FCC RF exposure guidelines.