choisir virgin mobile/optus

Hé les gars, j'ai remarqué que lorsque je mets mon virgin mobile sim carte dans mon Samsung Galaxy SJ'ai la possibilité de choisir un service de Virgin Mobile ou un service de Optus. peut quelqu'un me dire pourquoi je reçois la possibilité de choisir, merci

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> Voir plus: choisir virgin mobile/optus

It could be a provider that is available to roam on if Virgin Mobile is not available in that area you're in. Even if you can't roam on that provider, it might still be listed if it is picking up the signal.

I had a cell phone that picked up another network but it didn't allow me to use it, it was just listed on there.