GPS is a satellite navigation system primarily used to provide geographic location information and navigation services. It determines the precise position of the equipment by receiving signals from multiple satellites in Earth orbit.

　　Cellular network is a communication network primarily used to provide voice calls, text messages, and data services. It relies on ground level cellular towers to transmit and receive signals, covering cities, rural areas, and other areas.

　　Dependency and Coverage:

　　GPS services can be used almost anywhere in the world with clear sky views, without relying on ground communication infrastructure.

　　The availability of cellular services is limited by the location and density of cellular towers, and coverage is usually poor in remote or mountainous areas.

　　Power consumption and connectivity:

　　GPS typically consumes more power when in use because it requires continuous reception of signals from multiple satellites.

　　The power consumption of cellular networks is relatively low, but it may increase in areas with weak signals as mobile phones increase power to try to connect to remote cellular towers.

　　On smartphones and other mobile devices, GPS and cellular networks are usually complementary in use. For example, when the GPS signal is poor, many devices will use cellular and Wi Fi networks to assist in positioning, which is called A-GPS (Assisted GPS). This can improve the speed and accuracy of positioning.

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