Disclosed is a method for obtaining a communication service for a mobile terminal, the method including: monitoring at least one parameter representing an operational state of at least one service provided by a first communication network into which the mobile terminal is registered to with a first subscriber identity; in response to a detection that the at least one parameter does not fulfill at least one predetermined condition generating a signal to cause the mobile terminal to switch the first subscriber identity to a second subscriber identity, wherein the second subscriber identity allows the mobile terminal to register to a second communication network as a roaming subscriber. The invention also relates to a mobile terminal, a network node and a computer program product.