T-Mobile today kicked off its latest deal, a limited time Buy One, Get one offer on flagship LG smartphones.

Starting today, August 18th, you can buy an LG G6 or LG V20 from T-Mobile and get a second G6 or V20 for free. To get this deal, both phones must be purchased on an Equipment Installment Plan, and you’ll need to add a line as well.

Once you purchase both phones, you’ll need to point your browser to T-Mobile’s Promotions Center and enter the promo code 17Q3LGBOGO. T-Mo will then send you a prepaid MasterCard card worth up to $500 to cover the cost of your second device.

Pricing for the LG G6 is set at $20 down and $20 per month for 24 months, or $500 total. The LG V20 is $0 down and $20 per month, for a total of $480.

Both phones are LG’s current flagship models, though the V20 won’t be for much longer. They’ve both got high-end hardware like large Quad HD displays and dual camera setups, but they’ve also each got one unique feature to differentiate them from each other: The G6 has super slim bezels around its display, which is very much a 2017 trend, while the V20 has a secondary screen to give you quick access to music controls, frequently used apps, and more.