Galaxy S25 Ultra • Unlocked vs OnePlus 12 • Unlocked

The Samsung Galaxy S25 Ultra, released in early 2025, and the OnePlus 12, launched in late 2023 and globally in early 2024, are both high-end Android smartphones designed for demanding users. While both offer premium experiences, the Galaxy S25 Ultra emphasizes advanced AI capabilities and an integrated stylus, whereas the OnePlus 12 focuses on rapid charging and a display with exceptionally high peak brightness.

The practical lifespan of a smartphone is significantly influenced by its release timeline and the manufacturer's commitment to software updates.

• Software Support: The Galaxy S25 Ultra launched with Android 15 and One UI 7, and Samsung has committed to providing seven years of operating system upgrades and security updates, extending its support until 2032. This extended support ensures the device remains current and secure for a considerable period. In contrast, the OnePlus 12, which debuted with Android 14 and OxygenOS 14, is slated to receive four years of Android updates and five years of security patches.
• Physical Durability: The Galaxy S25 Ultra features a titanium frame and Corning Gorilla Armor 2 on the front, along with Gorilla Glass Victus 2 on the rear, contributing to its robust build and an IP68 rating for dust and water resistance. The OnePlus 12 utilizes Corning Gorilla Glass Victus 2 for screen protection and carries an IP65 rating for dust and water resistance.
• Repairability: The OnePlus 12 has a moderate repairability score, with some components like the battery and screen being accessible, though strong adhesives are used. Information regarding the specific repairability score for the Galaxy S25 Ultra is less detailed, but flagship devices often present challenges due to their intricate designs.

Both devices are equipped with powerful internal components designed to handle demanding applications and multitasking with ease, though they feature different generations of processing technology.

• Processing Power: The Galaxy S25 Ultra is powered by a customized version of a current-generation processor, optimized for Galaxy devices, which enhances its ability to manage on-device AI tasks and demanding applications. The OnePlus 12 features a previous-generation flagship processor, which still delivers strong performance for gaming and everyday use, maintaining smooth operation even under heavy load.
• Memory and Storage: The Galaxy S25 Ultra typically comes with 12GB of RAM, with a 16GB option available for its highest storage configuration in some regions, alongside UFS 4.0 storage options up to 1TB. The OnePlus 12 offers configurations with 12GB or 16GB of RAM, with a 24GB option in some markets, and UFS 4.0 storage up to 512GB, also with a 1TB option in certain regions.
• Battery Endurance and Charging: The OnePlus 12 houses a larger 5400 mAh battery, which, combined with its efficient processor, often translates to extended usage times, with many users reporting full-day or even multi-day battery life. It also supports exceptionally fast 100W wired and 50W wireless charging. The Galaxy S25 Ultra features a 5000 mAh battery, providing ample power for a full day of typical use, and supports fast wired and wireless charging, though at lower wattages than the OnePlus 12.

Both smartphones offer high-quality displays, but they differ in peak brightness and specific display technologies.

• Display Technology and Resolution: The Galaxy S25 Ultra features a 6.9-inch Dynamic LTPO AMOLED 2X display with a resolution of 3120 x 1440 pixels, providing sharp and vibrant visuals. The OnePlus 12 comes with a 6.82-inch QHD+ LTPO AMOLED display, offering a resolution of 3168 x 1440 pixels, also ensuring high clarity.
• Brightness and Smoothness: The OnePlus 12 boasts an impressive peak brightness of up to 4500 nits, which can significantly improve outdoor visibility and HDR content viewing. The Galaxy S25 Ultra's display reaches a peak brightness of up to 2600 nits (with some sources indicating 3000 nits), which is still very bright for most conditions. Both devices feature adaptive refresh rates ranging from 1Hz to 120Hz, ensuring smooth scrolling and animations while optimizing power consumption.
• Visual Enhancements: The OnePlus 12 incorporates ProXDR technology for more accurate brightness adjustment and eye comfort features. The Galaxy S25 Ultra's display includes an anti-reflective coating to reduce glare and Eye Comfort Shield to minimize blue light.

Both devices offer advanced camera systems, but they approach mobile photography with slightly different hardware and software philosophies.

• Rear Camera Systems: The Galaxy S25 Ultra features a versatile quad-camera setup, including a 200MP main sensor, a 50MP ultrawide lens, a 10MP telephoto lens with 3x optical zoom, and a 50MP periscope telephoto lens offering 5x optical zoom. This configuration provides extensive zoom capabilities and high-resolution imaging. The OnePlus 12, with its 4th Generation Hasselblad Camera System, includes a 50MP main sensor, a 48MP ultrawide lens, and a 64MP periscope telephoto lens with 3x optical zoom.
• Photography Performance: The Galaxy S25 Ultra is noted for its ability to capture detailed images, especially with its high-megapixel main sensor and enhanced AI processing for crisp and vibrant photos, even in low light. The OnePlus 12's camera system, tuned by Hasselblad, is praised for producing natural and accurate color representation, particularly in portrait mode, and performs well in various lighting conditions.
• Video Recording and Front Camera: Both phones are capable of recording 8K video. The Galaxy S25 Ultra has a 12MP front-facing camera. The OnePlus 12 features a 32MP front camera, offering high-resolution selfies and video calls.