Network selection in a mobile telecommunications system

摘要

A mobile station such as a telephone handset (1) for a mobile radio telecommunications system, is operable in different, user selectable configurations for which radio transmissions are made with different frequencies or signal formats so that the user can roam from a home network (PLMN A) to a another network (PLMN B) which operates in a different configuration to the HPLMN. The handset (1) includes a controller (8) to cause a search to be made for transmissions corresponding to a plurality of the different configurations when a configuration for a roamed network has been selected by the user so as to enable the handset to find the HPLMN when returning to the network coverage area of the HPLMN. <IMAGE>