iPhone 15 Pro vs Galaxy S24 Ultra: Which Flagship Gives Better Value in 2025?

Are you torn between the iPhone 15 Pro and the Samsung Galaxy S24 Ultra in 2025? You're probably wondering: Which flagship phone gives better value for my money over the next few years? It's a fair question, especially since both devices are still top-tier performers even a year after launch. Most reviews focus on specs and camera comparisons, but we dig deeper into resale value depreciation and carrier trade-in deals—two factors that directly impact your wallet. After all, a phone's value isn't just about the upfront price; it's about what you get back when you upgrade or trade in.

Background/Context: Why Value Matters More Than Specs in 2025

Flagship phones have reached a plateau in performance. The iPhone 15 Pro's A17 Pro chip and the Galaxy S24 Ultra's Snapdragon 8 Gen 3 (or Exynos 2400 in some regions) are both overkill for daily tasks. In 2025, the real differentiator is long-term value—how much of your investment you can recover when you trade in or sell. Carrier deals also vary wildly, with AT&T, Verizon, and T-Mobile offering different trade-in credits for last year's flagships.

The Depreciation Reality for iPhones and Galaxies

Historically, iPhones retain value better than Android counterparts. According to SellCell's 2024 depreciation data, the iPhone 15 Pro lost about 36% of its value in the first year, while the Galaxy S24 Ultra dropped nearly 48%. But in 2025, that gap is narrowing due to Samsung's aggressive trade-in promotions. We've seen carrier offers that effectively make the S24 Ultra cheaper than the iPhone 15 Pro when you trade in an older device.

Core Concepts: Understanding Depreciation and Carrier Deals

To evaluate value, we look at two key metrics:

• Resale Value: How much you can get selling privately (eBay, Swappa) after 12 and 24 months.
• Trade-In Value: The credit offered by carriers when you upgrade to a newer phone (like the iPhone 17 or Galaxy S25).

Both phones are still solid choices, but their value trajectories differ. Let's break it down.

In-Depth Analysis: iPhone 15 Pro vs Galaxy S24 Ultra – Value Breakdown

1. Initial Cost vs. Long-Term Ownership

The iPhone 15 Pro launched at $999, while the S24 Ultra started at $1,299 (with a bump to 256GB base). However, by early 2025, you can find both on sale. The S24 Ultra often drops to $1,099 or less, narrowing the gap. But the initial price isn't the whole story.

2. Resale Value After 12 Months (2025)

We checked Swappa and eBay in March 2025. The iPhone 15 Pro (128GB, unlocked) sells for around $650–$700, retaining about 70% of its original value. The Galaxy S24 Ultra (256GB, unlocked) fetches about $750–$800, which is roughly 62% of its launch price. On paper, iPhones still win, but Samsung's higher starting price means you lose more absolute dollars.

3. Carrier Trade-In Deals in 2025

Here's where it gets interesting. Major carriers are running trade-in promotions that heavily favor Samsung. For example, AT&T offered up to $1,000 off the Galaxy S25 Ultra when trading in any Galaxy S24 Ultra, effectively making the S24 Ultra worth $1,000 toward a new phone after one year. In contrast, iPhone trade-in offers top out around $800 for the iPhone 15 Pro. So if you upgrade every year, Samsung's ecosystem may give you better value.

4. Total Cost of Ownership (TCO) Example

Assume you buy the phone outright and trade it in after two years. With an iPhone 15 Pro ($999) and a trade-in value of $500 (around 50% retention), your net cost is $499. With the Galaxy S24 Ultra ($1,299) and a trade-in of $700 (54% retention), your net cost is $599. iPhones come out ahead. But if you factor in carrier deals that boost trade-in value by $200–$300, the S24 Ultra can match or beat the iPhone's net cost.

Practical Applications: Which One Should You Buy in 2025?

Who Should Buy the iPhone 15 Pro?

• You plan to keep the phone for 2–3 years and want maximum cash resale value.
• You prefer iOS ecosystem and seamless integration with Apple devices.
• You want consistent carrier trade-in deals (though not the highest possible offers).

Who Should Buy the Galaxy S24 Ultra?

• You upgrade every year and can capitalize on Samsung's high trade-in credits.
• You want the best display, S Pen functionality, and zoom camera (10x optical).
• You are open to switching carriers to get the best deal.

Cheaper Alternatives to Consider

If budget is a concern, you might skip both flagships. Check out these 7 Cheaper Alternatives to iPhone 15 Pro Max in 2026. They offer solid performance at lower prices.

Real-World User Experience Nuances

Beyond value, consider software updates. Apple supports iPhones for 5–6 years, while Samsung guarantees 7 years of OS updates for the S24 Ultra. So even if depreciation is steeper, the S24 Ultra will get updates longer, which could matter for resale in year 4.

Also, battery health affects trade-in value. Both phones degrade similarly, but charging cycles differ. The S24 Ultra supports 45W charging vs. iPhone 15 Pro's 27W, so faster top-ups could preserve battery longevity if you charge less.

Our Recommendations

After analyzing resale data, carrier deals, and total cost of ownership, here's our verdict:

• For one-year upgrade cycle: Samsung Galaxy S24 Ultra wins thanks to aggressive trade-in bonuses. You'll net a lower cost if you trade in after 12 months.
• For two-year or longer ownership: iPhone 15 Pro is the smarter choice. Its higher resale retention and stable trade-in offers give you better overall value.
• For heavy users who want the latest tech: The S24 Ultra's S Pen, superior zoom, and larger display make it worth the extra upfront investment—especially if you use trade-in deals.
• For ecosystem loyalists: Stick with the iPhone if you're in Apple's ecosystem. The value of seamless integration outweighs a few hundred dollars.

Our Testing Methodology

We based this analysis on:

• Swappa and eBay sold listings (Feb–Mar 2025) for unlocked devices in good condition.
• Published carrier trade-in deals from AT&T, Verizon, and T-Mobile (as of Mar 2025).
• Historical depreciation data from SellCell and BankMyCell.

Bottom Line

The iPhone 15 Pro and Samsung Galaxy S24 Ultra are both excellent phones in 2025, but value depends on your upgrade frequency and willingness to chase deals. If you trade in annually and can snag a carrier promotion, the S24 Ultra offers surprising value. For long-term ownership and resale, the iPhone 15 Pro remains the safer bet. Ultimately, the best value phone is the one that maximizes your trade-in or resale dollars based on your specific buying pattern.

Quick Decision Guide

• Highest cash resale after 2 years: iPhone 15 Pro
• Best trade-in value after 1 year: Galaxy S24 Ultra
• Best total cost of ownership (2-year): iPhone 15 Pro (by ~$100)
• Best update longevity: Galaxy S24 Ultra (7 years vs. 5–6)

We hope this helps you make an informed purchase. For more budget-friendly choices, explore our list of 7 Cheaper Alternatives to iPhone 15 Pro Max in 2026.

Frequently Asked Questions

What is the total cost of ownership for the iPhone 15 Pro vs Galaxy S24 Ultra in 2025?

Total cost of ownership includes purchase price minus resale or trade-in value after two years. For the iPhone 15 Pro ($999), with a typical trade-in of $500, net cost is about $499. For the Galaxy S24 Ultra ($1,299), with a trade-in of $700, net cost is $599. However, carrier promotions can lower the S24 Ultra's net cost significantly.

How do carrier trade-in deals differ between iPhone 15 Pro and Galaxy S24 Ultra in 2025?

Carrier trade-in deals in early 2025 favor Samsung. AT&T, for example, offered up to $1,000 for a Galaxy S24 Ultra toward a Galaxy S25 Ultra, while iPhone trade-in offers maxed out around $800 for an iPhone 15 Pro. Verizon and T-Mobile have similar gaps. These promotions make the S24 Ultra more valuable if you upgrade annually.

Why does the iPhone 15 Pro retain more resale value than the Galaxy S24 Ultra?

Apple's strong brand demand and consistent software support cause iPhones to depreciate slower. Historically, iPhones lose about 36% in the first year versus nearly 48% for Samsung flagships. This is due to a larger used market and higher perceived reliability, though Samsung's aggressive trade-in programs offset some of this gap for frequent upgraders.

Who should buy the Galaxy S24 Ultra in 2025 instead of the iPhone 15 Pro?

The Galaxy S24 Ultra is ideal for users who upgrade every year and can take advantage of high trade-in credits from carriers like AT&T or Verizon. It also suits those who prioritize the S Pen, a superior zoom camera, and a larger display. If you switch carriers often, Samsung's promotions can make the S24 Ultra cheaper than the iPhone over time.