iPhone 15 Pro vs Galaxy S24 Ultra: Worth the Upgrade?

Are you staring at your current smartphone, wondering if upgrading to the iPhone 15 Pro or Galaxy S24 Ultra is worth the money? You're not alone. Every year, both Apple and Samsung release flagships that promise better cameras, faster chips, and slicker designs—but your wallet feels the pinch. This guide isn't about benchmark bragging rights; it's about real-world longevity and resale value, so you can decide if upgrading now makes financial sense.

Overview

The iPhone 15 Pro and Galaxy S24 Ultra are the pinnacle of their ecosystems. The iPhone 15 Pro (starting at $999) brings a titanium frame, the A17 Pro chip, and a 48MP main camera. The Galaxy S24 Ultra ($1,199 base) counters with a 200MP sensor, a built-in S Pen, and the Snapdragon 8 Gen 3 processor. But beyond specs, most people really want to know: Will this phone last me several years, and will I get good money back when I sell it?

We'll break down how each phone holds up in daily use, how long they'll receive updates, and how their resale values trend. By the end, you'll have a clear answer on whether upgrading now is a wise financial move or a costly mistake.

Background/Context

The iPhone vs. Galaxy rivalry has driven innovation for over a decade. Apple's iPhone 15 Pro series represents a shift to titanium and USB-C, addressing long-standing user complaints. Samsung's Galaxy S24 Ultra doubles down on AI features and a refined design, promising seven years of OS updates.

But in 2026, the smartphone market has matured. Gains from year-to-year upgrades have plateaued. The real question isn't "which is faster?"—it's "which will last longer and hold its value?" We've analyzed historical depreciation data, trade-in programs, and real-world battery degradation to give you the full picture.

Core Concepts

To evaluate these phones from a financial longevity perspective, you need to understand three key metrics:

1. Longevity: How long will the phone receive software updates and security patches? How well does the battery hold up after 2–3 years? Is the hardware durable enough to survive daily drops and scratches?

2. Resale Value: What percentage of the original cost can you recoup after 1, 2, or 3 years? Trade-in programs and secondary market prices tell the story.

3. Cost Per Year of Ownership: The purchase price minus resale value, divided by the number of years you own the phone. This gives you the true annual cost.

We'll apply these metrics to both devices using data from trade-in sites, consumer reports, and our own testing.

In-Depth Analysis

Longevity: Software Updates and Hardware Durability

iPhone 15 Pro: Apple's software support is industry-leading—typically 5–6 years of iOS updates. The A17 Pro chip is powerful enough for years of app demands. The titanium frame and Ceramic Shield front are scratch and drop resistant, though titanium scratches more easily than stainless steel. Battery health degrades at about 10–15% per year under normal use; Apple charges $99 for a battery replacement, so you can extend life cheaply.

Galaxy S24 Ultra: Samsung now matches Apple with seven years of OS updates and security patches—a huge improvement. The Snapdragon 8 Gen 3 is a capable performer, and the Armor Aluminum frame with Gorilla Glass Armor is durable. The S Pen is a plus for productivity, but if it breaks, repairs are costly. Battery replacement is similarly affordable ($89–119), and Samsung's battery health monitoring helps you track degradation.

Verdict: Both phones will last 4–5 years easily. However, Apple's longer track record of timely updates and easier battery replacement gives the iPhone a slight edge in longevity for the average user.

Resale Value: Historical Depreciation

Resale value is where the difference becomes stark. Historically, iPhones retain value markedly better than Galaxy flagships. After one year, a $999 iPhone 15 Pro might sell for $650–700 (65–70%). A $1,199 Galaxy S24 Ultra typically resells for $650–750 after a year (54–63%). After three years, the gap widens: iPhones retain ~40–45%, while Galaxies often drop to 25–30%.

Why? iPhones have a stronger secondary market, access to cheaper refurbishment through Apple, and broader carrier compatibility. Samsung phones lose value faster due to frequent promotional discounts and faster obsolescence of their Android features.

If resale value matters to you, the iPhone 15 Pro is the clear winner. But if you plan to hold your phone for 4+ years, resale value matters less—longevity and satisfaction take priority.

Cost Per Year of Ownership

Let's run the numbers for a 3-year ownership scenario:

• iPhone 15 Pro: Purchase price $999. After 3 years, resale value ~$400. Net cost: $599, or about $200/year.
• Galaxy S24 Ultra: Purchase price $1,199. After 3 years, resale value ~$300. Net cost: $899, or ~$300/year.

That means the Galaxy S24 Ultra actually costs you $100 more per year—despite its higher upfront price. Adding trade-in deals can shift this, but Samsung's trade-in offers often have high initial values that drop quickly.

Real-World Daily Use

Beyond numbers, consider your lifestyle. The iPhone 15 Pro's smaller size (6.1-inch) and lighter weight (187g) make it more pocketable and easier for one-handed use. The Galaxy S24 Ultra is a brick—232g and a 6.8-inch display. That's a plus for media consumption and S Pen productivity, but a minus for comfort and durability (more mass = more drop impact).

Battery life is comparable—both easily get through a full day. Charging speeds: Galaxy supports 45W wired, iPhone only 20W. If you need fast top-ups, Samsung wins; if you prefer wireless charging, Apple's MagSafe is more refined.

Practical Applications

Scenario 1: You're Coming from an Older iPhone (12 or earlier)

Upgrading to the iPhone 15 Pro is a huge jump—you'll get 5G, better cameras, USB-C, and years of updates. Your current iPhone's trade-in value (if any) reduces the pain. This upgrade makes financial sense if you plan to use the phone for 3+ years.

Scenario 2: You're Coming from a Galaxy S20 or Note 20

The Galaxy S24 Ultra offers a massive leap in performance and battery life, and Samsung's 7-year software promise means you'll get updates until 2030. If you value the S Pen and big screen, it's worth it. Just be aware of the steeper depreciation.

Scenario 3: You're on a Budget or Don't Need a Flagship

If the cost per year gives you sticker shock, consider the 7 Cheaper Alternatives to iPhone 15 Pro Max in 2026 or the 7 Cheaper Alternatives to Galaxy S24 Ultra in 2026. These options sacrifice a few features but deliver excellent value—many for less than half the price.

Scenario 4: You Upgrade Every 2 Years

If you constantly chase the latest, the iPhone 15 Pro holds its value better, so you'll lose less per upgrade cycle. The Galaxy S24 Ultra will hit you with a bigger depreciation hit—consider buying it on a promotional deal if you insist on Samsung.

Our Recommendations

Choose the iPhone 15 Pro if:

• You care about maximum resale value and lower cost per year.
• You prefer a lighter, more pocketable phone.
• You're already in the Apple ecosystem (AirPods, Watch, Mac).
• You want the best long-term software support track record.

Choose the Galaxy S24 Ultra if:

• You want the biggest screen and S Pen productivity.
• You need faster charging and more DIY customization.
• You're okay with the higher annual cost, valuing features over financial efficiency.
• You plan to keep the phone for 4+ years, where resale matters less.

Skip both if:

• Your current phone works fine and is less than 3 years old. The upgrade isn't worth the money.
• You're on a tight budget—the cheaper alternatives provide 80% of the experience at half the price.

Conclusion

Upgrading to a flagship smartphone is rarely a pure financial investment—it's an emotional and lifestyle purchase. But by focusing on longevity and resale value, you can quantify what that excitement costs. The iPhone 15 Pro wins on cost-efficiency and resale value, making it the smarter choice for most buyers. The Galaxy S24 Ultra is a fantastic device, but you pay a premium for its size and features that you won't get back at trade-in time.

Before you open your wallet, evaluate your current device's age, your upgrade cycle, and how long you plan to keep the new phone. And always check the alternatives—sometimes the smarter upgrade is actually a more affordable one.

Bottom Line

If you want the best long-term financial value, the iPhone 15 Pro is the clear winner: it costs less per year to own, retains more of its value, and has proven longevity. The Galaxy S24 Ultra is only worth it if you specifically need the S Pen, huge display, or fast charging—and you accept the steeper annual cost. For everyone else, explore the cheaper alternatives in our guides before committing to a flagship upgrade.

Frequently Asked Questions

What are the display size and resolution differences between the iPhone 15 Pro and Galaxy S24 Ultra?

The iPhone 15 Pro has a 6.1-inch Super Retina XDR OLED with 120Hz ProMotion, while the Galaxy S24 Ultra features a larger 6.8-inch Dynamic AMOLED 2X also with 120Hz. The S24 Ultra gets brighter, reaching 2,600 nits peak, and includes Gorilla Glass Armor for better scratch resistance. Both have always-on displays, but the Galaxy offers a higher 1440p resolution vs. iPhone's 2556×1179. Choose based on size preference.

How does the battery life of the iPhone 15 Pro compare to the Galaxy S24 Ultra?

In real-world usage, the Galaxy S24 Ultra typically lasts longer on a single charge due to its 5,000mAh battery and efficient Snapdragon 8 Gen 3. The iPhone 15 Pro's 3,274mAh battery still delivers solid all-day life, but heavy users may need a top-up. Streaming tests show the S24 Ultra can reach 16 hours, while the iPhone 15 Pro nets around 15. Both charge by cable at 25W–27W, but wireless charging is similar.

Why is the Galaxy S24 Ultra more expensive than the iPhone 15 Pro?

The Galaxy S24 Ultra costs $200 more because it packs a larger 6.8-inch screen, a built-in S Pen, a 200MP main camera with 10x optical zoom, and more RAM (starting at 12GB). Its titanium-like armor aluminum frame and advanced AI features also raise manufacturing costs. The iPhone 15 Pro uses standard titanium but lacks an integrated stylus and costs less to produce despite its premium build.

When should you sell your current phone to get the best resale value before upgrading?

To maximize trade-in value, sell your current phone within the first two weeks after a new flagship launches. At that point, demand for older models peaks, and many carriers offer promotional bonuses for switching. Avoid waiting until the next generation announcement, as values drop sharply once newer phones enter the market. For the iPhone 15 Pro vs. S24 Ultra comparison, selling just before release of the next model yields the best returns.