Telstra Calling Card Upgrading A Telstra Plan For An IPhone...?

Upgrading a Telstra plan for an iPhone...? - telstra calling card

I'm still a Telstra $ 40, but someone had my phone. of course, has my SIM card, because if I call stating that my number will be terminated. I thought I could get the same phone number and transfer to my new project ... But I prefer to have a new iPhone, I wonder if you can somehow transfer or do I upgrade my plan, I can use it for an iPhone ...?