In this case, "very interested" could mean "coming soon". An iPhone on MetroPCS or other prepaid carriers could be a method by which Apple introduces another mid-range offering, too.

T-Mobile CEO John Legere said on Wednesday that Apple's iPhone could well wind up on MetroPCS, though it's not necessarily a given. T-Mobile and the pre-paid carrier merged into a single company ...

MetroPCS CFO Braxton Carter said that were Apple to bring an LTE-equipped version of the iPhone to market, MetroPCS would allow it to access its LTE network. Network access would only be given to ...