Samsung S26 Ultra vs OnePlus 15: The start of 2026 is going to be very exciting for tech lovers, as both Samsung Galaxy S26 Ultra and OnePlus 15 are going to make a splash in their respective fields. Galaxy S26 Ultra focuses on premium features and camera versatility, while OnePlus 15 will attract mid-to-high segment users with core performance, big battery and fast charging.
Design & Display
Samsung Galaxy S26 Ultra comes with a slightly refined look, with rounded edges that soften the slightly sharp corners of the previous models. Its 6.81-inch Dynamic LTPO AMOLED 2X display promises very smooth and bright visuals along with a 165Hz refresh rate. OnePlus 15 ditches its signature curved display and comes with a flat 6.7-inch LTPO AMOLED display that offers durability and feels easy for daily use. Both phones have a 165Hz refresh rate, but the Edge-to-Edge immersive experience of the S26 Ultra feels more premium.
Performance & Processor
Both phones come with Snapdragon 8 Elite 2, which is based on the 3nm process and can handle all kinds of heavy apps and gaming. The Samsung S26 Ultra has improved thermal management with an improved vapor chamber, while the OnePlus 15 is optimized for long gaming and high-speed charging with its advanced cooling tech. If you want performance and sustained usage, both are strong candidates, but the OnePlus 15 could take the edge in battery-heavy tasks.
Camera Setup
The camera battle is also going to be interesting. The Samsung Galaxy S26 Ultra's triple and dual telephoto lens setup is quite versatile, with a 200MP main sensor it can be the king of low-light and zoom photography. The OnePlus 15's approach is a bit user-friendly and balanced, with a 50MP triple-camera it will provide simple and high-quality shots, the front camera is also quite solid with 32MP. If you want photography versatility and zoom, the Galaxy S26 Ultra is the best, but for easy-to-use and consistent shots, the OnePlus 15's setup is perfect.
Battery & Charging
The OnePlus 15 is a big game-changer here. Its battery can range from 6,000mAh to 7,000mAh, and there is also 30W-50W wireless support along with 100W-120W wired charging, which makes for a fast top-up. The Galaxy S26 Ultra feels a bit standard with a 5,000-5,500mAh battery and 45W-60W charging. If you want heavy usage and fast charging, the OnePlus 15 can be the king.
Final Verdict
The Samsung Galaxy S26 Ultra is for users who want a best-in-class camera, refined design and premium feature-packed flagship experience. OnePlus 15 is for those users who give top priority to performance, massive battery and lightning-fast charging. With a flat display and simplified camera setup, OnePlus 15 seems to be a very practical and appealing option for a broader audience.