Devices such as mobile phones, tablets, wearables, head mounted displays, and computers auto-connect to a wireless network (e.g., a Wi-Fi network) regardless of the speed or quality of the connection offered by the network. In some instances, a Wi-Fi network can deliver lower speed and can be less reliable than a cellular data connection. In such instances, the cellular data connection can be preferable to the Wi-Fi connection. Testing connection speeds of various available connections require connecting to the network first, can cause delays in connection, and requires extra network usage and battery power. This disclosure describes techniques that utilize prior information about the comparative quality of available Wi-Fi and cellular networks, and automatically connects the user device to a preferred network. The prior information includes, e.g., scores for various Wi-Fi networks and expected cellular speed at locations.

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