If you’ve been thinking about taking advantage of T-Mobile’s free iPhone offer, you’ve only got a few more days to do so.

T-Mobile COO Mike Sievert said today that T-Mo’s free iPhone 7 promotion will end this Sunday, Sept. 25. If you want to take advantage of the offer, you can visit T-Mo’s website, call customer support, or make the trek to your local T-Mobile store.

With this deal, you can trade in an iPhone 6, 6s, 6 Plus, or 6s Plus and get a 32GB iPhone 7 for free with a 24-month finance agreement. You can also get a 32GB iPhone 7 Plus for $120 if you’d like. To upgrade to a model with more storage, you’ll pay an extra $100 per storage tier. iPhone 5, 5c, 5s, and SE owners can also trade in their device and get a discount on an iPhone 7.

Here’s how the pricing for this iPhone offer breaks down:

It’s worth noting that to qualify for this deal, you must fully own your iPhone and the device must meet T-Mo’s trade-in requirements, meaning that it must power on, must not be water-logged, and must not have a broken screen. You’ll also need to enroll in a T-Mobile One plan to qualify. Finally, if you cancel service before your 24-month finance agreement is up, you’ll have to pay the remaining balance on the device.

Sources: @RogerWCheng, @FierceWireless, Seeking Alpha