Mobile apparatus with multiple subscriber identity modules

A mobile apparatus comprising:

• a wireless transceiver;
• a first mechanical slot to receive a first physical subscriber identity module card including a default subscriber identity module;
• a second mechanical slot to receive a second physical subscriber identity module card including a plurality of alternative subscriber identity modules;
• one or more processors;
• and
• one or more memories storing computer program code, the one or more memories and the computer program code programmed to, with the one or more processors, cause the mobile apparatus to:
• communicate, with the wireless transceiver utilizing the default subscriber identity module as a master, voice and message services;
• communicate selection data with an operator-independent external electronic service, the selection data including information about network operators and data communication services offered by the plurality of the alternative subscriber identity modules, wherein the selection data includes one or more of:
• a data transfer capacity of the data communication service, costs of using the data communication service, costs of using the data communication service according to a day of week and/or time of day, according to a data transfer speed, availability of an operator/data communication service in a specific location, and/or rules for a selection indicating a preference between different operators in different locations;
• receive, with the wireless transceiver utilizing the default subscriber identity module, network information about available network operators;
• obtain location data determining a current location of the mobile apparatus;
• select an alternative subscriber identity module on a basis of the selection data, the network information, and the location data;
• and
• communicate, with the wireless transceiver utilizing the selected alternative subscriber identity module, data communication services,
• wherein the plurality of the alternative subscriber identity modules have been compiled in the second physical subscriber identity module card by an operator-independent service provider providing the operator-independent external electronic service.