OnePlus 15 vs Samsung Galaxy S25 Ultra

OnePlus 15

OnePlus

8.5

Excellent

Samsung Galaxy S25 Ultra

Samsung

8.7

Excellent

What Reviewers Agree On

Snapdragon 8 Elite Gen 2 delivers class-leading performance with exceptional sustained speeds thanks to effective thermal management
The 6,000mAh battery with 100W wired and 50W wireless charging provides outstanding battery life and the fastest charging in its class
The 2K LTPO AMOLED display with up to 4,500 nits brightness is stunning for media consumption and outdoor use
Price-to-performance ratio is the best in the flagship segment, consistently undercutting Samsung and Apple by $200-400
Hasselblad camera tuning delivers natural, pleasing colors with excellent dynamic range in good lighting

Deal Breakers

Software update commitment of 4 years OS + 5 years security still trails Samsung and Google's 7-year promises
No IP69 rating — while IP65 provides splash resistance, it falls short of Samsung and Apple's full submersion ratings

Detailed Comparison

Display

OnePlus 15

The 6.7-inch 2K LTPO AMOLED panel pushes to a staggering 4,500 nits peak brightness with 1-120Hz adaptive refresh — one of the brightest smartphone displays available.

The 2K resolution LTPO panel is gorgeous with exceptional color accuracy, deep blacks, and 4,500 nits peak brightness that makes outdoor visibility outstanding
1-120Hz adaptive refresh rate with LTPO 2.0 ensures butter-smooth scrolling while preserving battery life during static content
The curved edge display looks elegant but can occasionally cause accidental palm touches during one-handed use

Samsung Galaxy S25 Ultra

The 6.9-inch Dynamic AMOLED 2X display with 2600 nit peak brightness and anti-reflective coating is universally praised as the best smartphone display available.

2600 nit peak brightness with anti-reflective coating makes it the most sunlight-readable phone
120Hz LTPO refresh rate is butter smooth with excellent touch response

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Camera

OnePlus 15

The Hasselblad-tuned triple camera system delivers natural colors and excellent portraits, with a 50MP main, 50MP ultrawide, and 50MP 3x periscope telephoto.

Hasselblad color science produces warm, natural tones that look true to life — portraits are particularly impressive with excellent skin tone rendering and bokeh
The 3x periscope telephoto delivers sharp, detailed shots and the 50MP sensor means cropping to 6x still produces usable results
In challenging mixed-lighting conditions, HDR processing can occasionally produce artifacts and inconsistent exposure between the three lenses
Video recording at 4K60 is excellent with effective stabilization, though Dolby Vision HDR video still trails iPhone in dynamic range

Samsung Galaxy S25 Ultra

The quad camera system features an improved 200MP main sensor, 50MP ultrawide, 10MP 3x telephoto, and 50MP 5x periscope. Galaxy AI enhances post-processing significantly.

200MP main sensor produces incredibly detailed shots with improved noise handling
Galaxy AI photo editing (Generative Edit, Best Face) is genuinely useful and well-implemented
Video recording improvements with LOG support appeal to content creators
Night mode still trails iPhone 16 Pro in very low light scenarios

Performance

OnePlus 15

The Snapdragon 8 Elite Gen 2 paired with up to 16GB RAM delivers the fastest Android performance available, with excellent thermal management maintaining sustained speeds.

Snapdragon 8 Elite Gen 2 delivers top-of-class benchmark scores with Geekbench multi-core exceeding 10,000 — the fastest Android phone tested
Thermal management is excellent — sustained gaming performance remains high even after extended sessions, with minimal throttling
16GB RAM ensures app retention is excellent — you can return to apps hours later and find them exactly where you left them

Samsung Galaxy S25 Ultra

Snapdragon 8 Elite delivers the fastest Android performance available with excellent efficiency. 12GB RAM handles multitasking and AI workloads effortlessly.

Snapdragon 8 Elite is a beast — fastest Android chip with significant efficiency gains
On-device AI processing is noticeably faster than cloud-based alternatives
Thermals are well-managed with the larger vapor chamber — no throttling in sustained use