Method and arrangement for connectivity in a communication network

A method in an infrastructure provider for supporting connectivity of a wireless device to a network infrastructure, the method comprising:

• associating a set of device identification numbers to a first radio access provider in a subscription database of the infrastructure provider, and
• setting the first radio access provider as a preferred roaming partner in a subscriber module,
• wherein a subscriber identifier in said subscriber module includes at least a network identifier of the infrastructure provider and one of the device identification numbers associated to the first radio access provider,
• wherein the subscriber module is provided for use in said wireless device, and wherein access to the network infrastructure over a radio access network of the first radio access provider is enabled in the wireless device based on the subscriber identifier and the preferred roaming partner in the subscriber module;
• wherein the wireless device is enabled to attach to the first radio access provider according to the preferred roaming partner in the subscriber module, and the first radio access provider is enabled to direct the wireless device to the network infrastructure based on the network identifier in the subscriber identifier;
• and
• wherein different sets of device identification numbers are associated to different radio access providers in the subscription database, and the different radio access providers are set as preferred roaming partners in further subscriber modules, wherein subscriber identifiers in said further subscriber modules include said network identifier, to enable access to the infrastructure over corresponding radio access networks by means of said further subscriber modules.