Abstract: Embodiments generate and provide connection quality data for networks based on past performance of those networks. Network experience data and corresponding device context are received from a first set of mobile devices. The received data is processed to generate the connection quality data, which is distributed to a second set of mobile devices for use in selecting a network and establishing a connection. Feedback describing performance of the selected network is received and applied to adjust the previously generated connection quality data. In some embodiments, the connection quality data represents voice over Internet Protocol (VoIP) call quality.