AT&T has the best free Galaxy S20 preorder deals, get S20 Ultra for $400

America's second largest carrier, however, will cover even that remainder amount if you port in a number and sign up for one of its 5G plans like the AT&T Unlimited Extra or Elite together with the phone's purchase. 

For the Galaxy S20+, AT&T will cover up to $999 with an eligible trade-in, leaving you on the hook for just $200 to get Samsung's golden middle child in the S20 series with the huge 4500mAh battery.

The Galaxy S20 Ultra, however, enjoys no "free phone" offers from AT&T, as it's the phone for millionaires to get, what with the $1400 starting price tag, and the $1600 end one that are higher than even what Samsung's first horizontal foldable, the Galaxy Z Flip clamshell, commands.

It does, however, participate in the "up to $1000 off with a trade-in" program, too, so you can get it for $400 if you go through all the hoops that AT&T lists in its small print below:

"UP TO $1000 CREDIT W/ TRADE-IN OFFER: Limited time offer. Requires port-in of new line from an eligible third-party carrier to receive up to $1000 off eligible S20 5G, S20+ 5G, S20 Ultra 5G devices (max credit of up to $1000 for port-in of new line; $500 for new line without port-in. Req’s trade-in of eligible smartphone and purch. of new eligible smartphone on qualifying 0% APR installment plan (30 mos. up to $53.33/mo.). Other installment options may be available and vary by location. If buying on the AT&T Installment Plan with Next Up, customer is responsible and will not receive any credits for an additional $5/mo. for the Next Up upgrade feature. $0 down: Well-qualified credit may be required for $0 down on device, or down payment may be required. Max discount will not exceed the lower of the device cost or the max credit you are eligible for under this offer. Eligible Smartphones: After all credits, get Samsung S20 5G, S20+ 5G, S20 Ultra 5G (priced up to $1600) for up to $1000 off."

Eligible Trade-in Smartphones: (Port or adding a new line)

• Apple:iPhone 7, 7 Plus, 8, 8 Plus, X, XR, XS, XS Max, 11, 11 Pro, 11 Pro Max
• Samsung:Galaxy A50, A7, A8+, A9, Note8, Note 9, Note 10, Note 10+, Galaxy S8, Galaxy S8 Active, Galaxy S8 Duos, Galaxy S8+, Galaxy S9, Galaxy S9+, Galaxy S9+ Duos, Galaxy S10, Galaxy S10 5G, Galaxy S10+, Galaxy S10E
• Google:Pixel 2, 2XL, 3, 3 XL, 3a, 3a XL
• LG:G8 ThinQ, V40 ThinQ, V50 ThinQ
• Motorola:Z4
• Other:RED Hydrogen One, Razer 2, OnePlus 5
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