iPhone 15 deals — the biggest discounts I've seen so far

iPhone 15: $3/month w/ trade-in + unlimited @ AT&T
New and existing AT&T members can get up to $700 off an iPhone 15 with trade-in. You'll need to be signed up to one of AT&T's qualifying unlimited plans to get this deal. 

Mint Mobile: get 6 free months w/ iPhone 15 @ Mint Mobile
Mint Mobile is offering one of the best iPhone 15 deals if you want to save on data. Purchase any 6-month plan at Mint Mobile and you'll get an extra 6 months for free. For instance, Mint Mobile's unlimited plan is $30/month. Buy 6 months (total $180) and you'll get an extra 6 months on the house. (You'll wind up with 12 months total).  

iPhone 15: free w/ unlimited @ Verizon
Verizon is offering the iPhone 15 for free. To get this deal, you'll need to activate a new line with either Verizon's Unlimited Plus or Unlimited Ultimate plan. Otherwise, no trade-in is required. In our iPhone 15 review, we said its design, excellent main camera performance, and long lasting battery life (11 hours and 5 minutes) make it a formidable phone worthy of your attention. It features a 6.1-inch 2556 x 1179 OLED display, A16 Bionic chip, 48MP main camera, 12MP ultrawide camera, 12MP front camera, and USB-C connectivity. 

Boost Infinite: free iPhone 15 w/ unlimited for $60/month @ Amazon
Amazon is offering the iPhone 15 for free when you sign up for Boost Infinite. Boost Infinite is a membership plan for iPhone users. For $60/month, you get unlimited talk, text, and data. Plus, after 12 consecutive monthly payments, members can upgrade to the latest iPhone model at no extra cost. There is no trade-in requirement to join, which means you can keep your current iPhone or sell it to a third party. 

Boost Infinite: free or up to $1,000 off + unlimited for $60/month
Boost Infinite is a membership plan for iPhone users. For $60/month, you get unlimited talk, text, and data. Plus, you'll get a free iPhone 15. After 12 consecutive monthly payments, members can upgrade to the latest iPhone model at no extra cost. There is no trade-in requirement to join, which means you can keep your current iPhone or sell it to a third party. 

iPhone 15: up to $700 off w/ trade-in @ Best Buy
Best Buy's iPhone 15 deals will offer a credit of up to $700 with trade-in of an older phone. Otherwise, the retailer has the current iPhone 15 family on sale from $799. 

iPhone 15: up to $630 w/ trade-in @ Apple Store
The Apple Store is offering up to a $630 credit when you trade-in your old smartphone for one of the new iPhone 15 models. An iPhone X will get you up to a $120 credit, whereas an iPhone 12 Pro will get you up to a $360 credit. 

iPhone 15: free w/ trade-in + unlimited @ T-Mobile
The Magenta network is offering the iPhone 15 for free (up  to $1,000 off) when you trade-in an old device and sign up for a qualifying Go5G Plus or Go5G Next plan. 

Mint Mobile: get 6 free months w/ iPhone 15 Plus @ Mint Mobile
Mint Mobile is offering one of the best iPhone 15 Plus deals if you want to save on data. Purchase any 6-month plan at Mint Mobile and you'll get an extra 6 months for free. For instance, Mint Mobile's unlimited plan is $30/month. Buy 6 months (total $180) and you'll get an extra 6 months on the house. (You'll wind up with 12 months total).  

iPhone 15 Plus: up to $830 off w/ trade-in @ Verizon
New and existing Verizon customers can get up to $830 off the iPhone 15 Plus when you trade in any old phone in any condition. Note that you'll need to activate a Verizon unlimited plan to get this deal. 

iPhone 15 Plus: up to $700 off w/ trade-in + unlimited @ AT&T
New and existing AT&T customers can get up to $700 off the iPhone 15 Plus with trade-in. You'll also need to be signed up to one of AT&T's qualifying unlimited data plans. In our iPhone 15 Plus review, we said it offers the best battery life of any iPhone we've ever tested at 14 hours and 14 minutes. The addition of pro-level features in the iPhone 15 Plus also makes it a much more satisfying successor. It features a 6.7-inch 2796 x 1290 OLED display, A16 Bionic chip, 48MP main camera, 12MP ultrawide camera, 12MP front camera, and USB-C connectivity.

Boost Infinite: free or up to $1,000 off + unlimited for $60/month
Boost Infinite is a membership plan for iPhone users. For $60/month, you get unlimited talk, text, and data. Plus, you'll get a free iPhone 15. After 12 consecutive monthly payments, members can upgrade to the latest iPhone model at no extra cost. There is no trade-in requirement to join, which means you can keep your current iPhone or sell it to a third party. 

iPhone 15 Plus: free w/ trade-in + unlimited @ T-Mobile
The Magenta network is offering the iPhone 15 Plus for free (up  to $1,000 off) when you trade-in an old device and sign up for a qualifying Go5G Plus or Go5G Next plan. 

iPhone 15 Pro: free w/ trade-in + unlimited @ Verizon
New and existing Verizon customers adding a new line can get the iPhone 15 Pro for free (up to $830 off) when you trade in any old phone. Note that you'll need to activate a Verizon unlimited plan. In our iPhone 15 Pro review, we called the Editor's Choice phone a compact powerhouse. It features a 6.1-inch 2556 x 1179 OLED 120Hz display, A17 Pro chip, 48MP main camera, 12MP ultrawide camera, 12MP telephoto, 12MP front camera, and USB-C connectivity.

iPhone 15 Pro: free w/ trade-in + unlimited @ AT&T
New and existing AT&T customers can get the iPhone 15 Pro for free with trade-in. You'll also need be signed up to one of AT&T's qualifying 5G unlimited data plans. In our iPhone 15 Pro review, we called the Editor's Choice phone a compact powerhouse. It features a 6.1-inch 2556 x 1179 OLED 120Hz display, A17 Pro chip, 48MP main camera, 12MP ultrawide camera, 12MP telephoto, 12MP front camera, and USB-C connectivity.

Boost Infinite: free or up to $1,000 off + unlimited for $60/month
Boost Infinite is a membership plan for iPhone users. For $60/month, you get unlimited talk, text, and data. Plus, you'll get a free iPhone 15. After 12 consecutive monthly payments, members can upgrade to the latest iPhone model at no extra cost. There is no trade-in requirement to join, which means you can keep your current iPhone or sell it to a third party. 

Mint Mobile: get 6 free months w/ iPhone 15 Pro @ Mint Mobile
Mint Mobile is offering one of the best iPhone 15 Pro deals if you want to save on data. Purchase any 6-month plan at Mint Mobile and you'll get an extra 6 months for free. For instance, Mint Mobile's unlimited plan is $30/month. Buy 6 months (total $180) and you'll get an extra 6 months on the house. (You'll wind up with 12 months total).  

iPhone 15 Pro: free w/ trade-in + unlimited @ T-Mobile
The Magenta network is offering the iPhone 15 Pro for free when you trade-in an old device and sign up for a qualifying Go5G Plus or Go5G Next plan. 

iPhone 15 Pro Max: up to $830 off w/ trade-in + unlimited @ Verizon
New and existing Verizon customers adding a new line on the Unlimited Ultimate plan can knock up to $830 off the iPhone 15 Pro Max when you trade in any old iPhone in any condition. Note that you'll need to activate a Verizon unlimited plan. In our iPhone 15 Pro Max review, we said the Editor's Choice phone sports a stronger/lighter titanium design that makes a big difference in everyday use. Add in the powerful A17 Pro chip for next-gen gaming, USB-C port, and super-long battery life (14 hours and 2 minutes) and you have the best iPhone money can buy. It features a 6.7-inch 2796 x 1290 OLED 120Hz display, A17 Pro chip, 48MP main camera, 12MP ultrawide camera, 12MP telephoto, 12MP front camera, and USB-C connectivity.

iPhone 15 Pro Max: up to $1,000 off w/ trade-in + unlimited @ AT&T
New and existing AT&T customers can get up to $1,000 off the iPhone 15 Pro Max with trade-in. You'll also need be signed up to one of AT&T's qualifying 5G unlimited data plans. Note that the base model now comes standard with 256GB and costs $1,199 (which is a $100 increase from last year's base model with 128GB). 

Boost Infinite: free or up to $1,000 off + unlimited for $60/month
Boost Infinite is a membership plan for iPhone users. For $60/month, you get unlimited talk, text, and data. Plus, you'll get a free iPhone 15. After 12 consecutive monthly payments, members can upgrade to the latest iPhone model at no extra cost. There is no trade-in requirement to join, which means you can keep your current iPhone or sell it to a third party.