OnePlus 15 vs Samsung Galaxy S25 Ultra
Verdict
Our overall take, at a glance
Key takeaways
- OnePlus 15 and Samsung Galaxy S25 Ultra are closely matched overall (within 1 points).
- OnePlus 15 stands out on Memory RAM capacity: 16 GB, Storage capacity: 1,024 GB, Display Refresh rate: 165 Hz.
- Samsung Galaxy S25 Ultra counters with Display Size: 6.9 in, Display Resolution: 1440 × 3120 px, Display Pixel density: 498 PPI.
OnePlus 15 and Samsung Galaxy S25 Ultra are closely matched
$899 at launch
OnePlus 15
83
Samsung Galaxy S25 Ultra
83
Where OnePlus 15 stands out
- Memory RAM capacity: 16 GB
- Storage capacity: 1,024 GB
- Display Refresh rate: 165 Hz
Where Samsung Galaxy S25 Ultra stands out
- Display Size: 6.9 in
- Display Resolution: 1440 × 3120 px
- Display Pixel density: 498 PPI
In-depth analysisAI
AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Jul 2026.
OnePlus 15
The OnePlus 15 is a flagship smartphone that represents a highly unconventional generational update, described by reviewers as a significant departure from standard annual refreshes. Produced by Oppo-backed OnePlus, the device leverages the brand's legacy of focusing on a high price-to-performance ratio and custom software integration. Specific hardware specifications and processor details are not documented in the provided source materials.
Best for Buyers looking for a smartphone that delivers a major departure from standard, pBest for Users interested in a device from a brand historically committed to strong price
Pros
- Characterized by reviewers as a highly unique and non-traditional product update rather than an incremental change
- Benefits from the manufacturer's established history of balancing high-end quality with competitive pricing
- Backed by shared supply chain and manufacturing resources with Oppo
Cons
- The brand has historically faced criticism regarding customer support and past issues with app performance throttling
Samsung Galaxy S25 Ultra
AI analysis isn't ready yet
We haven't generated an in-depth write-up for Samsung Galaxy S25 Ultra yet. The specs, scores and strengths profile above still cover it — check back later for the AI summary.
Value for Money
Which is the better deal for the price
Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.
OnePlus 15
Samsung Galaxy S25 Ultra
Battery capacity
Larger cell — a hardware spec, not battery life
OnePlus 157,300 mAh
Samsung Galaxy S25 Ultra5,000 mAh
Capacity is the raw battery size. Real-world battery life depends just as much on the processor, software and display.
Physical Comparison
Weigh them up, then compare real dimensions in 3D
OnePlus 15Samsung Galaxy S25 Ultra
Samsung Galaxy S25 Ultra is 7 g (3%) heavier than OnePlus 15.
Review Videos
Hand-picked expert reviews for each product
Detailed Specifications
The full spec sheet, side by side