India’s premium smartphone market continues to grow, and the arrival of the OnePlus 15 adds fresh excitement for buyers looking to purchase top-end options. The new OnePlus flagship is positioned as a direct competitor to Samsung’s Galaxy S25 Ultra, a device that already has a strong following in the country. Choosing between the two can be challenging, especially when each brings its own appeal in terms of features, photography and overall user experience. Here is a clear breakdown of their design, display, performance, cameras, battery features and pricing to help you understand what both phones offer on paper. This should make it easier to see which model aligns better with your personal needs and preferences.
The OnePlus 15 sports a sleek, symmetrical design with ultra-slim 1.15 mm bezels and gentle curves that enhance in-hand comfort. It features a centred logo, the signature Alert Slider, and a minimalist triple-camera island and comes in premium finishes like matte AG glass in Infinite Black, Sand Storm, and Ultra Violet. The Sand Storm variant also includes an MAO-treated frame paired with a fibreglass back for added durability.
Samsung Galaxy S25 Ultra, on the other hand, continues its boxy, squared design with an 8.9 mm thickness, an Armour Aluminium frame, a floating-lens rear layout, an integrated S Pen, and a frosted glass finish for better grip and fewer smudges.
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The OnePlus 15 features a 6.78-inch 1.5K BOE X3 LTPO AMOLED display with a 165 Hz refresh rate. It comes with a 1272 × 2772 resolution that provides a sharp 450 PPI, keeping text and visuals clear. The screen also reaches 1,800 nits of peak brightness for good visibility indoors and outdoors.
Samsung Galaxy S25 Ultra comes with a slightly larger 6.9-inch Dynamic AMOLED 2X display with an adaptive 1-120 Hz refresh rate for balanced smoothness and efficiency. Its 1,400 × 3,120 resolution delivers crisp details suited for high-resolution media and productivity. The display reaches a peak brightness of 2,600 nits, ensuring excellent visibility even in direct sunlight.
On the performance front, the OnePlus 15 is powered by the Snapdragon 8 Elite Gen 5 chipset, coupled with 12 GB of RAM and 256 GB of internal storage in the base variant. The device ships with OxygenOS 16 based on AndroidOS 16 out of the box.
The Samsung device, on the other hand, features the Snapdragon 8 Elite processor paired with 12 GB of RAM and storage configurations up to 1 TB. It runs Android 15 with One UI 7 and offers seven years of OS and security updates.
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The OnePlus 15 features a triple-camera system consisting of a 50MP Sony IMX906 OIS primary sensor, a 50MP Omnivision OV50D ultrawide lens, and a 50MP Samsung JN5 3.5x telephoto periscope camera with OIS, along with a 32MP front camera.
In comparison, the Samsung Galaxy S25 Ultra is equipped with a quad-camera setup that includes a 200MP main camera with 2x in-sensor zoom and OIS, a 50MP ultrawide sensor, a 50MP 5x telephoto lens, and a 10MP 3x telephoto module, offering 8K UHD video recording at 30fps, complemented by a 12MP selfie camera.
The OnePlus 15 is equipped with a substantial 7,300 mAh battery, complemented by 120 W wired fast charging and 50 W wireless charging support. The device can also be used for effortless wireless reverse charging.
However, the Samsung Galaxy S25 Ultra features a 5,000 mAh battery with 45 W wired charging, 15 W wireless charging, and Samsung’s Wireless PowerShare functionality for convenient reverse charging.
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OnePlus 15 is launched at a starting price of Rs 72,999 for the 256GB model, whereas the Galaxy S25 Ultra comes at a price tag of Rs 1,29,999 for the base 256GB model.