: The Galaxy S4 is a "strategic" trade-in; because it is accepted in "any condition," it is better to trade this old device for a $900 credit than to trade a newer, more valuable phone like an S24, which might be better sold privately.
To utilize your Galaxy S4 for an upgrade, follow these steps outlined by AT&T Support : at&t buyback galaxy s4
: Visit the AT&T Trade-in page and enter your device's IMEI to confirm it qualifies for the "Any Year" promotion. : The Galaxy S4 is a "strategic" trade-in;
: For the highest flagship discounts (e.g., $1,100+ off an S26 Ultra), AT&T often requires a newer model like an S22+ or Z Fold3. The S4 typically qualifies for the $800–$900 credit tier. AT&T Celebrates the Arrival of Samsung Galaxy S26 Series The S4 typically qualifies for the $800–$900 credit tier
: For corporate accounts, the Business Device Trade-in program accepts all devices to minimize e-waste, applying a quote-based credit to the business account within two billing cycles. How to Complete a Trade-In
: You can return the device to an AT&T retail store for instant processing or request a prepaid mailing kit to ship it.