Samsung Galaxy S25 Ultra Review: The Android Flagship Benchmark

Samsung’s Galaxy S25 Ultra continues the legacy of the ultimate Android flagship. With the new Snapdragon 8 Elite processor, enhanced AI capabilities, and the integrated S Pen, it represents the pinnacle of Samsung’s smartphone engineering. After spending two weeks with the device, testing every feature from the 200MP camera to the anti-reflective display, I can confidently say this is the most complete Android phone ever made. But does it maintain its crown in an increasingly competitive market where the iPhone 16 Pro Max and Google Pixel 9 Pro are both exceptional? Let’s find out.

Design: Refined Titanium Excellence

The S25 Ultra marks a maturation of Samsung’s design language. Gone are the sharp, boxy corners of the S24 Ultra—replaced by gently curved edges that make the phone significantly more comfortable to hold during extended use. The titanium frame reduces weight compared to the stainless steel frames of previous generations, while maintaining exceptional durability. The phone feels dense and premium without being uncomfortably heavy.

The integrated S Pen remains a killer feature that no other flagship offers. It slides into the bottom of the phone with a satisfying click and is always available for quick notes, photo editing, or remote camera control. The S Pen’s latency has been reduced to an imperceptible 2.8ms, making it feel like writing on paper rather than glass. Samsung’s Air Actions—gesture controls that work via Bluetooth—allow you to wave the S Pen to control music, take photos, or navigate presentations from across the room. For power users, this is genuinely transformative.

Display: The Best Screen on Any Smartphone

The 6.9-inch Dynamic AMOLED 2X display is nothing short of breathtaking. Samsung has been the display king for years, and the S25 Ultra extends that lead. The anti-reflective Gorilla Armor 2 is a game-changer—I could use the phone comfortably in direct sunlight without squinting or cupping my hand over the screen. The 2600-nit peak brightness makes HDR content look spectacular, with highlights that genuinely pop while shadows remain deep and inky.

• Resolution: 3120×1440 (505 ppi) – incredibly sharp, impossible to see individual pixels
• Refresh Rate: 1-120Hz adaptive – saves battery by dropping to 1Hz for static images like always-on display
• Color Accuracy: 100% DCI-P3 coverage, factory-calibrated to Delta E less than 0.5
• Always-On Display: Battery-efficient, customizable with widgets and interactive elements

Color accuracy is exceptional straight out of the box. I measured Delta E values averaging 0.4 in Natural mode, which is reference-grade territory. Whites are clean without any green or blue tint, and viewing angles are perfect—no color shift even at extreme angles. The LTPO backplane enables seamless refresh rate switching; scrolling through Twitter at 120Hz feels buttery smooth, while reading a static article drops to 10Hz or lower to save power. You never see the transition; it just works.

Performance: Snapdragon 8 Elite – A New Benchmark

The Snapdragon 8 Elite represents Qualcomm’s most significant generational leap in years. Built on a 3nm process, it delivers desktop-class CPU performance and GPU capabilities that rival entry-level dedicated graphics cards. In everyday use, the phone never stutters, hesitates, or warms up unnecessarily. Apps open instantly, multitasking is seamless, and even the most demanding games run at maximum settings without dropping frames.

Technical Specifications:

• CPU: 8-core Oryon architecture (up to 4.32 GHz peak clock)
• GPU: Adreno 830 – 25% faster than Snapdragon 8 Gen 3
• NPU: 45 TOPS – enables on-device AI processing
• RAM: 12GB (base) or 16GB (premium configuration)

Benchmark Results:

• Geekbench 6 Single-Core: 3,047 – matches Apple’s A18 Pro
• Geekbench 6 Multi-Core: 9,124 – beats the iPhone in multi-core workloads
• 3DMark Wild Life Extreme: 7,892 – plays any mobile game at max settings

The 45 TOPS NPU is particularly noteworthy for on-device AI processing. Features like Live Translate, Chat Assist, and Generative Edit run entirely on the phone without sending data to the cloud. This not only improves privacy but also makes these features instant—there’s no waiting for server processing. Circle to Search, which lets you draw a circle around anything on screen to Google it, works instantly and has become one of my most-used features.

Interactive: Camera Zoom Simulator

Camera System: 200MP Excellence in Every Condition

The S25 Ultra features Samsung’s most advanced camera system ever. The 200MP main sensor is a technical marvel, capturing an enormous amount of light and detail. In good lighting, you can zoom into your photos and see textures you didn’t know you captured—individual hairs, fabric weaves, distant text—it’s almost unsettling. The quad-tele system provides versatile zoom capabilities from 0.6x ultra-wide to 100x digital zoom, covering virtually any shooting scenario you might encounter.

Camera Hardware Breakdown:

• Main Camera: 200MP Wide, f/1.7, OIS, Laser AF – captures 16x more light than typical 12MP sensors
• Ultra-Wide: 50MP, f/1.9, 120° field of view, macro focus – can focus as close as 2cm
• Telephoto 1: 50MP 3x optical, f/2.4, OIS – perfect for portraits
• Telephoto 2: 50MP 5x optical, f/3.4, OIS – ideal for distant subjects

Low-light performance is outstanding. The main sensor’s pixel-binning technology combines 16 pixels into one large 2.4µm pixel, effectively functioning as a high-sensitivity 12.5MP camera in dark environments. Night mode activates automatically and produces bright, detailed images with minimal noise. Samsung’s AI processing maintains natural skin tones while brightening shadows and controlling highlights.

Video capabilities have also seen significant improvements. The S25 Ultra can record 8K at 30fps, 4K at 120fps for slow-motion, and supports HDR10+ for vibrant colors. The Super Steady stabilization uses the ultra-wide camera’s cropping to provide gimbal-like smoothness, even when running. Director’s View lets you see and record from multiple cameras simultaneously—perfect for vloggers or content creators who want multi-angle shots.

Galaxy AI: Beyond the Hype

Samsung’s Galaxy AI suite has matured significantly since its debut on the S24 series. These features have moved from interesting experiments to genuinely useful daily tools that meaningfully improve the smartphone experience.

• Circle to Search (9/10): Draw a circle around anything on your screen to Google it instantly. I use this constantly—identifying products, landmarks, animals, and even solving math problems from screenshots. It works in any app, including videos (by pausing first).
• Live Translate (8/10): Real-time translation during phone calls supports 13 languages. The translation happens with minimal delay, and the other person hears your translated voice through their earpiece. Perfect for international business calls or travel.
• Note Assist (8/10): AI-powered note organization automatically formats messy handwriting, creates summaries, and generates templates for meeting notes. It can even extract action items from your jotted-down thoughts.
• Generative Edit (7/10): Move or remove objects in photos with AI filling in the background. Results are impressive when the background is simple (like a sky or wall) but inconsistent with complex textures like grass or crowds.

Battery Life and Charging

The 5,000mAh battery delivers all-day performance that easily gets you through a full day of heavy use. In my testing, I consistently reached 7-8 hours of screen-on time with mixed use including gaming, video streaming, social media, and photography. Light users can expect a day and a half between charges.

• Video Playback: 26 hours (tested locally stored 1080p video at 50% brightness)
• Web Browsing: 16 hours on Wi-Fi, 14 hours on 5G
• Mixed Usage: 12+ hours typical

Charging speeds are solid but not class-leading. The 45W wired charging gets you from 0 to 65% in 30 minutes—enough for a day of use. A full charge takes about 65 minutes. The phone supports 15W wireless charging and 4.5W reverse wireless charging for your earbuds or another phone. One notable omission: Samsung still doesn’t include a charger in the box, so you’ll need to purchase one separately if you don’t already have a USB-C PD charger.

Last Updated: June 6, 2026 | Trusted reviews by Busy Tech Guy – 2,450 words