Best Buy deal: Buy a Sprint iPhone 7 or 7 Plus, get a free iPhone SE
The free iPhone SE offer is available only in Best Buy stores, so you can't take advantage of it online. The deal is valid until February 2, or while supplies last. Make sure to read (or ask for) the full terms and conditions of the offer.
Normally, an iPhone SE 16 GB costs $399, so getting one for free is pretty nice (even if you first have to buy and activate an iPhone 7 for this). To find out more about the deal, check out Best Buy's website at the source link below, or visit a Best Buy store near you.
source: Best Buy