You'll know you've made it in the world when you don't care about paying full price for a new iPhone anymore; but until your No. 1 single drops or you hit the lottery, deals matter.

That brings us to T-Mobile's latest promotion.

The magenta telecom company rolled out its latest iPhone 11 offer Friday, the aptly worded, "Get iPhone 11 On Us when you switch."As you can imagine, that means you get an iPhone 11 for "free" if you port your number over to T-Mobile, sign up for a new line of service and trade in your old device.

The crazy thing is, you can trade in some pretty old phones for $700 in credits. Eligible trade-ins include:

  • iPhone XR (64GB; 128GB)
  • iPhone X (64GB)
  • iPhone 8
  • iPhone 8 Plus
  • iPhone 7
  • iPhone 7 Plus
  • iPhone 6s Plus
  • iPhone 6s

For reference: Prince, David Bowie and George Kennedy were all still alive when the iPhone 6s came out. If you're hanging on to an iPhone 6s, it's probably time to trade up. It's also not a bad time to revisit the artistic genius that left us a few years ago.

Of course, the free iPhone 11 is paid through 24 monthly bill credits, but there's $0 down required. In other words, you're not paying anything out of pocket for an iPhone 11. You'll just have to remain a T-Mobile customer for two years with your iPhone 11 in order to not be charged the remaining balance.

For reference, an iPhone 6s trade-in with Apple will get you $100 max. Instead, your nearly-bricked device is worth $700 right now at T-Mobile. In case you're bad at math: That's $600 more than normal.

And as someone who has had both Verizon and AT&T before switching to T-Mobile a few years ago: I have been pleased with my service for a variety of reasons. If you live in a big metro area, and find you'd lower your bill by switching, there's no reason not to.

Or, you know, don't switch and keep overpaying. It's your money!
