By Technology Editor Ian Bush

PHILADELPHIA (CBS) — T-Mobile has never sold the iPhone, and it likely won’t offer Apple’s newest version that’s expected to be announced next week.

But the wireless company still wants iPhone customers.   T-Mobile thinks its price plans are a good deal for data-hungry smartphone users.   For $70, you can get unlimited voice, web, and downloads with no throttling.

That’s cheaper than AT&T’s offering, which doesn’t include unlimited data.

So, if your AT&T iPhone contract is up, T-Mobile is hoping you’ll forego the iPhone 5 and instead get AT&T to unlock your current device and transfer your service.

A few catches: this won’t work with iPhones from Verizon or Sprint, only AT&T.  And T-Mobile is still upgrading its 4G network so, for now, you may have to deal with slower speeds than you’re used to.

More CBS Philly Tech News