Samsung announced an official buy-back program for the Galaxy S20 trio - you can return your old S20 up to two years after purchase and if it's in good condition, Samsung will give you up to 50% of its original price as credit when you buy a new phone or tablet. This means you can get up to $700 for a Samsung Galaxy S20 Ultra (128GB, $800 for the 512GB model). A Galaxy S20+ can save you $600 if you took good care of it, a Galaxy S20 could be worth $500. Again, the phone needs to be in good condition - check out the FAQ for more details on what that means. Don't forget to enroll in the...
Source: https://www.gsmarena.com/samsung_will_buy_back_old_galaxy_s20_devices_at_up_to_50_of_msrp_after_two_years-news-42382.php