Health and Safety 139Availability of Various Features/Ring Tones Health and SafetyAnytime the Power Save feature is activated, a message displays onthe screen. When a signal is found, your phone returns to standbymode.Understanding How Your Phone OperatesYour phone is basically a radio transmitter and receiver. When it'sturned on, it receives and transmits radio frequency (RF) signals.When you use your phone, the system handling your call controls thepower level. This power can range from 0.006 watts to 0.2 watts indigital mode.Maintaining Your Phone's Peak PerformanceFor the best care of your phone, only authorized personnel shouldservice your phone and accessories. Faulty service may void thewarranty.There are several simple guidelines to operating your phone properlyand maintaining safe, satisfactory service.• Hold the phone with the antenna raised, fully-extended and overyour shoulder.• Try not to hold, bend or twist the phone's antenna.• Don't use the phone if the antenna is damaged.• Speak directly into the phone's receiver.• Avoid exposing your phone and accessories to rain or liquidspills. If your phone does get wet, Immediately turn the poweroff and remove the battery. If it is inoperable, call Customer Carefor service.Availability of Various Features/Ring TonesMany services and features are network dependent and may requireadditional subscription and/or usage charges. Not all features are