Hi @Anne, yes you can bring any telephone handset you like to TPG and yes any current telephone handset will be compatible with the NBN. You mentioned your telephone handset is rented from Telstra. The only thing I would ask is whether you will need to give it back to Telstra when you cancel with them? Perhaps you need to buy it out from Telstra, or you can purchase another one quite cheaply from a place like Harvey Norman if you need to.
... View more