T-Mobile said Wednesday that iPhone 6S preorders have broken all records and to celebrate this, it is giving customers a chance to get one for just $5 a month on an 18-month contract without an upfront cost, but only if they trade-in an old iPhone 6, Galaxy Note 5, Galaxy S6 or Galaxy S6 Edge.

The headline-grabbing figure is clearly designed to entice those who have not already decided to upgrade to do so now ahead of the iPhone 6S launch Friday, with T-Mobile saying that it is "doubling down" on its iPhone offers by giving customers a chance to grab an iPhone 6S Plus (16GB) for $9 a month.

You can even get that monthly figure down to just $3 a month and increase the storage capacity of the iPhone 6S to 128GB if you are willing to pay $200 upfront. The closest monthly tariff from other U.S. networks is from Sprint, which is offering a $15-a-month deal on a 22-month contract.

T-Mobile's CEO John Legere confirmed that everyone who has already preordered the new iPhones will be able to take advantage of the new deals. Apple announced Wednesday that it was suspending all its preorders for the iPhone 6S and iPhone 6S Plus ahead of launch due to huge demand for the new phones. 

“With these incredible $5 and $10 a month deals, we’re giving customers just one more reason to come to T-Mobile,” said Legere. “This is a deal that only the Un-carrier could create, let alone make into a reality - and the crazy demand we’re already seeing tells me the carriers’ customers just aren’t buying their BS anymore. For your new iPhone the choice couldn’t be clearer.”

However, the choice was made decidedly less clear by Apple's announcement of the iPhone Upgrade Program, which sees customers sign a 24-month contract and in exchange you get to trade-in your current iPhone for a new iPhone every year, along with AppleCare+ coverage.