I'm on 2D Pay Monthly and separately, I want to set up a backup phone with a SIM card.
If I buy a 2D SIM with a new phone number, pay the prepay monthly $10 once, then leave it with no credit, will it still be active after 1 year e.g. receive calls? Or do I need to top it up within a period of time for it to remain active?
I've tried looking through all the Ts&Cs but can't see anywhere that says the SIM card will be deactivated if not topped up.