The promotion lets buyers get their hands on phones and other mobile gadgets without a down payment, but the devices must still be paid off in full via monthly installments.
The carrier is also guaranteeing that prices won't increase for customers on existing plans -- even if you're on a promotional program.
T-Mobile, GameStop, Firehouse Subs and Acme are among the retail chains now accepting Apple's mobile payment system, according to AppleInsider.
Can't afford the steep off-contract prices for Apple's new smartphones? T-Mobile joins other wireless carriers in aiming to make it easier for users to pay them off.
Buying the new iPhone? You'll need to crunch numbers to decide between traditional contracts and monthly payments. Learn about Apple's yearly Upgrade plan, and how T-Mobile's iPhone 6S comes at tempting low price.
The LG smartphone will be offered with Simple Choice Plans for zero down as part of a limited-time promotion.
The Internet giant could be hoping to take another stab at going head-to-head with Apple, Amazon, PayPal, Square and a slew of other tech giants looking to grab a slice of the payments pie.
T-Mobile's new contract-free price starts you off with a $100 payment for HTC's flagship device, plus two years of installments.
An earlier version of this story did not account for the fact that T-Mobile is waiving the $99 down payment on iPhones when people trade in their old devices. With this factored into the overall savings of the trade-in, T-Mobile's trade-in program actually offers consumers a better value than other trade-in sites such as Nextworth.
The company announced the news at its "Uncarrier" event in New York today. It will begin selling the iPhone 5 on Friday, April 12, for a $99.99 down payment.