Nokia 002Q944 User Manual page 150

Important: Battery talk and stand-by times are estimates and only possible
under optimal network conditions. Actual battery talk and standby times depend
on SIM cards, features used, battery age and condition, temperatures to which
battery is exposed, network conditions, and many other factors, and may be
significantly shorter than those specified above. Ringing tones, hands free call
handling, use in digital mode, and other features will also consume the battery, and
the amount of time a device is used for calls will affect its stand-by time. Likewise,
the amount of time that the device is turned on and in the standby mode will affect
its talk time.
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