Does Samsung have a birthday discount in the US?
No. Samsung US Rewards carries no birthday benefit. It is absent from the program page and absent from the terms, both of which describe tiers, points, accessory discounts and early access to sales instead.
Why so many lists say otherwise
Because the birthday voucher is real, just not here. Samsung runs birthday vouchers in other markets and the terms documents are easy to find: Malaysia, the United Kingdom, the European stores and Pakistan each have their own version. A US reader following one of those lands on a benefit their account will never receive.
It is the same trap as a merchant page that quietly serves a different country. Check which market a rewards page belongs to before you believe the benefit on it.
What Samsung US Rewards does give you
Points on purchases at a rate that rises with your tier, redeemable against products and services, across Silver, Gold, Platinum and VIP levels. Members also get discounts on accessories, on Samsung Care+ and on installation and haul-away, plus early access to some sales.
The route that does work on your birthday
Nothing about the date changes what Samsung charges, so the saving has to come from somewhere else. Samsung is carried by TopCashback, which pays a percentage back on the order regardless of when you place it. Rates move, so check the current one before you buy.
Checked against Samsung US Rewards and its terms and conditions. Programs change their terms often, so confirm before you rely on this.
Related: Urban Outfitters, FIGS, and Gap.