A mobile terminal comprising: a positioning module arranged to determine a geographical location of the mobile terminal; a local transceiver for connecting to local wireless access networks; and processing apparatus for communicating with a first, packet-based network by forming connections with the wireless local area networks using the local transceiver. The processing apparatus is configured to determine measures of connection quality experienced by the mobile terminal on ones of the connections, and to record the determined measures in a database associating measures of connection quality with geographical locations. The processing apparatus is further configured to control activation of the local transceiver to scan for subsequent availability of one or more of the wireless local area networks, in dependence on one or more of the measures of connection quality and associated geographical locations in the database relative to the geographical location of the mobile terminal as determined by the positioning module.