Samsung is now giving customers up to $400 off the Galaxy S10, Galaxy S10 Plus, and the Galaxy S10E with its new trade-in promo.

As is the case with deals like this, there are a few caveats and such in the fine print to take note of.

Galaxy S10 Discount

Samsung's new trade-in program only applies for the unlocked version of the phones. In other words, the carrier variants from AT&T, Sprint, T-Mobile, US Cellular, or Verizon aren't part of it, but just to be clear, the previous trade-in offer of up to $300 off for them is still available. The Galaxy S10 5G isn't included either since it's a time-limited exclusive to Verizon, after all.

Now only select phones from Samsung itself, Apple, LG, and Google are eligible for the full $400 discount. Here's a list of them:

• Galaxy Note 9

• Galaxy S9 or Galaxy S9 Plus

• Galaxy Note 8

• iPhone XS or iPhone XS Max

• iPhone XR

• iPhone X

• iPhone 8 or iPhone 8 Plus

• LG V40

• Pixel 3

• Pixel 3 XL

Other phones such as the Galaxy S8, Galaxy S8 Plus, iPhone 7, iPhone 7 Plus, LG V30, Pixel 2, and Pixel 2 XL are worth $350 in credit. Motorola handsets such as the Moto Z3 and Moto Z2 Force are also eligible, but they'll shave only $50 off the total price for the Galaxy S10.

According to Samsung, this is a limited-time offer only, but it didn't specify until when it'll stay up. For the record, it's available only in the United States.

It's also worth mentioning that buying an unlocked 512 GB Galaxy S10 comes with free Galaxy Buds and New Duo Charger. Purchasing an unlocked 256 GB Galaxy S10E is also bundled with a free New Duo Charger. On top of that, availing an unlocked 1 TB Galaxy S10 Plus comes with a free Chromebook Plus.

Those who want to take advantage of the offer can just head on over to Samsung's official website.

Galaxy S10 Pricing Gets Sweeter

To put things into perspective, the initial trade-in promo for the Galaxy S10 lineup allowed buyers who preordered the phone as early as February to get up to $550 off. Once the new flagships launched, the maximum amount was dropped to $300.

Now the South Korean brand is making its latest Galaxy phones more affordable with its new offer of up to $400 off.