OnePlus 15 vs Samsung S25 Ultra—Find out which flagship offers the best display, camera, and battery in 2025. Find out if OnePlus can really beat Samsung at half the price.
The premium smartphone competition is heating up once again—and this time, it’s between the budget-friendly powerhouse OnePlus 15 and Samsung’s luxury behemoth, the Galaxy S25 Ultra. Despite the huge price difference, both phones come with top-tier specifications, making this battle surprisingly close.
OnePlus has already launched its latest flagship in China and is gearing up for an international release, including India, on November 13. The phone promises flagship performance without the flagship price, potentially shaking up a market dominated by Samsung’s S25 Ultra. Let’s see how these two giants compare in terms of display, design, performance, battery, and cameras—and whether OnePlus can really take on Samsung’s premium beast.
Display and Design
When it comes to displays, both phones aim to impress—but in slightly different ways.
The Samsung Galaxy S25 Ultra comes with a 6.9-inch Dynamic AMOLED 2X display, which offers a 120 Hz refresh rate, HDR, and an incredible 2600 nits peak brightness. This means your screen will remain bright and vibrant with smooth scrolling and crystal-clear visuals, even in direct sunlight.
The OnePlus 15, on the other hand, features a 6.8-inch AMOLED display with a 165 Hz refresh rate, HDR10+, and 1800 nits peak brightness. Although it’s a little smaller and not as bright as Samsung’s panel, the faster refresh rate gives it an edge for gamers and anyone who enjoys ultra-smooth animations.
In terms of design, Samsung’s Galaxy S25 Ultra exudes luxury with its glass back and titanium frame, making it sturdy and premium to hold. The OnePlus 15 opts for a sleek glass finish with an aluminum frame, giving it a stylish, lightweight appeal. Both phones look and feel like premium devices, but Samsung’s titanium frame adds an extra touch of durability and exclusivity.
Performance and processor
This is where things get really exciting. Both devices are powered by Qualcomm’s latest and greatest chipsets—but with subtle differences that may matter to performance enthusiasts.
The Samsung Galaxy S25 Ultra runs on the Snapdragon 8 Elite for Galaxy processor, paired with the Adreno 830 GPU. This custom-tuned chipset is specifically designed for Samsung’s flagships, delivering superior performance, power efficiency, and thermal control.
Meanwhile, the OnePlus 15 is equipped with the Snapdragon 8 Elite Gen 5, which has the new Adreno 840 GPU. On paper, this gives the OnePlus a slight edge in graphics and AI-powered tasks, potentially making it faster for gaming and multitasking.
Both phones will come with at least 12GB of RAM, which will ensure smooth app switching and lag-free performance. In real-world use, most people will find both devices incredibly fast—although OnePlus may offer better value given its expected price.
Release date and price
OnePlus 15:
Release Date: The OnePlus 15 has already launched in China and is set to release globally, including in India, on November 13, 2025.
Expected Price: The phone is expected to start at around ₹50,000 in India, though the official price has not yet been confirmed.
Samsung Galaxy S25 Ultra:
Release Date: The Galaxy S25 Ultra was officially launched earlier in 2025 as part of Samsung’s flagship S25 lineup.
Price in India: It starts at ₹129,999 on Samsung’s official website.
So, while the Galaxy S25 Ultra is already available at a premium price, the OnePlus 15 is about to arrive, offering similar high-end performance at less than half the cost.
Battery and Charging
This is one area where OnePlus is clearly ahead.
The OnePlus 15 is expected to have a massive 7300 mAh carbon battery, which is much larger than most flagships currently offered. This will easily last more than a day and a half of heavy use.
In contrast, the Samsung Galaxy S25 Ultra has a 5000 mAh lithium-ion battery, which is respectable but standard for modern flagships. Both phones support fast charging and wireless charging, but the OnePlus’ significantly larger battery capacity may mean it takes less time to plug in and more time to get things done.
For users who hate charging their phones multiple times a day, OnePlus seems like the clear winner here.
Camera Comparison
When it comes to the camera, Samsung once again improves the experience.
The Galaxy S25 Ultra comes with a quad-camera setup at the back:
200MP primary sensor
50MP ultra-wide lens
10MP telephoto lens
50MP periscope telephoto lens
On the front, it has a 12MP selfie camera—perfect for sharp, detailed selfies and 4K video calls. Samsung has long been known for its image processing, and the S25 Ultra continues that tradition with stunning color accuracy and impressive zoom capabilities.
Meanwhile, the OnePlus 15 keeps things simple with a triple-camera setup:
50MP primary sensor
50MP ultra-wide lens
50MP periscope telephoto lens
On the front, it offers a high-resolution 32MP selfie camera, making it ideal for vloggers and selfie lovers. Both devices support 8K UHD video recording, ensuring cinema-quality footage right from your pocket.
In short, Samsung offers a more versatile camera setup with its four lenses and better zoom, while OnePlus focuses on balanced image quality and better selfie performance.
Software and Ecosystem
Although not mentioned in the original comparison, it’s worth noting that both devices run Android, but with very different experiences.
The Galaxy S25 Ultra comes with One UI 7 based on Android 15, which offers tight integration with Samsung’s Galaxy ecosystem—which includes smartwatches, tablets, and the Galaxy Buds series. This is perfect for users who have already invested in Samsung products.
On the other hand, the OnePlus 15 also runs OxygenOS 15 based on Android 15. OnePlus’ software is known for being clean, fast, and close to stock Android with minimal bloatware. Users who prefer simplicity and speed will appreciate the OnePlus experience.
Price and value of money
This is where things get really interesting—and where OnePlus looks to win big.
The Samsung Galaxy S25 Ultra price starts at ₹129,999 on Samsung’s official India website. This is absolutely prime territory—but it’s also at a price that’s out of reach for many people.
In comparison, the OnePlus 15 is expected to launch in India for around ₹50,000. Although not yet officially confirmed, this price makes it a true “flagship killer.” If the final price remains close to this estimate, OnePlus could attract a mass audience looking for top-tier performance without breaking the bank.
In short: OnePlus is offering flagship-level hardware at less than half the price of Samsung’s premium devices—an unbeatable deal for most consumers.
Final Verdict: Which One Should You Buy?
If money is no object and you want the best in camera performance, display quality, and brand reputation, the Samsung Galaxy S25 Ultra is still the king of Android phones. Its titanium build, advanced quad-camera system, and software polish make it one of the most complete smartphones on the market.
But if you’re looking for maximum value, the OnePlus 15 is a game-changer. With a new processor, larger battery, faster charging, and higher refresh-rate display, it offers 90% of the flagship experience at less than half the price.
In the end, it’s not just about price—it’s about priorities. Samsung offers unmatched luxury, while OnePlus focuses on efficiency and affordability.
When the OnePlus 15 hits global markets on November 13, it could very well reshape how we define a “premium” smartphone.
Bottom line: Samsung wins in luxury, but OnePlus may win your wallet and your heart.
Disclaimer
This article is intended for informational purposes only. Prices and specifications may change over time. Buyers are advised to check the official website or authorized retail stores for the latest updates before making a purchase.