Several major carriers and retailers are offering competitive Galaxy S25 contract deals in 2025, many featuring significant trade-in incentives, low monthly costs, and options for unlocked purchases[1].
At AT&T, you can trade in an eligible device for up to $1,000 off on premium S25 models—enough to get the Galaxy S25 Plus for free, or alternatively, purchase the standard Galaxy S25 for just $10 per month with an unlimited plan. New customers signing up online can also receive an extra $200 in bill credits[1].
T-Mobile similarly offers up to $1,000 off with trade-in on select plans (such as Go5G Next or higher), reducing the S25 Plus to $0 if you add a new line on a qualifying plan. For those not interested in trade-ins, up to $800 off is available, which fully covers the cost of a standard Galaxy S25 on installment[1].
Boost Mobile’s unique offering allows you to get the Galaxy S25 Plus plus unlimited service for $65/month without needing a trade-in. This Infinite Access plan is notable for its simplicity and comes with a free device upgrade option when you’re eligible[1]. On the Galaxy S25, Boost advertises a $0/month rate (down from $799.99) with its Infinite Access for Galaxy Plan. The Galaxy S25 Plus is available for as little as $5.56/month (or $999.99 upfront) with up to $800 off when you select qualifying service[5].
Major retailers also provide unlocked deals: Best Buy offers up to $200 off upfront on S25 series devices, and Walmart’s installment plans for Galaxy S25 devices start from $21 per month through various major carriers[1].
Xfinity Mobile and other participating carriers deliver up to $1,000 off with a trade-in, letting you maximize your savings while selecting from multiple S25 variants, including the S25, S25 Plus, and S25 Ultra[1].
The Galaxy S25 series was officially announced on January 22, 2025 and released for sale on February 7, 2025, making all models—including the S25, S25+, and S25 Ultra—readily available for contract and installment plans at most retailers and carriers nationwide[2][3][4][6].