- LocationSensor
TimeInterval Determines the minimum time interval, in milliseconds, that the sensor will try to use for sending out location updates. However, location updates will only be received when the location of the phone actually changes, and use of the specified time interval is not guaranteed. For example, if 30000 is used as the time interval, location updates will never be fired sooner than 30000ms, but they may be fired anytime after.
Values smaller than 30000ms (30 seconds) are not practical for most devices. Small values may drain battery and overwork the GPS.