The OnePlus 15 and Samsung Galaxy S25 Ultra are premium Android flagships with different priorities. Here's how they compare.
Quick Comparison
| Feature | OnePlus 15 | Galaxy S25 Ultra | |---------|-----------|-----------------| | Price | $899 | $1,299 | | Battery | 7,300mAh | 5,000mAh | | Charging | 120W | 45W | | Display | 6.78", 165Hz | 6.9", 120Hz | | Brightness | 1,800 nits | 2,600 nits | | Software Support | 4 years | 7 years |
Battery Life: OnePlus Wins
The OnePlus 15's 7,300mAh battery is nearly 50% larger than Samsung's 5,000mAh. Real-world result: genuine 2-day battery life versus daily charging. OnePlus also charges faster at 120W versus 45W.
Camera: Samsung Wins
Samsung's camera system is more mature with better zoom, more consistent processing across lenses, and refined image quality.
Software Support: Samsung Wins
Samsung offers 7 years of updates versus OnePlus's 4 years—a significant difference for long-term ownership.
Price: OnePlus Wins
The $400 price difference is substantial. The OnePlus 15 delivers flagship performance at a more accessible price point.
Recommendation
Choose OnePlus 15: Battery life and value are priorities.
Choose Samsung S25 Ultra: Camera quality, software longevity, and AI features matter most.
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How we researched this
Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from 1 retailer in ShopSavvy's price data, most recently seen Aug 2, 2026.
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More Answers
If you're still curious about the OnePlus 15, here are some other answers you might find interesting:
- Does the OnePlus 15 support wireless charging?
Yes, the OnePlus 15 supports wireless charging at up to 50W—among the fastest available on any smartphone. | Charger Type | Speed | Time to 50% |...
- What colors is the OnePlus 15 available in?
The OnePlus 15 is available in three colors: Sand Storm, Infinite Black, and Ultra Violet. | Color | Back Material | Key Feature |...
- Does the OnePlus 15 have an alert slider?
No, the OnePlus 15 does not have the traditional alert slider. This signature feature has been replaced with a programmable AI button. The alert slider was a...
- What storage options does the OnePlus 15 have and is it expandable?
The OnePlus 15 offers three storage configurations with no expandable storage. | Configuration | RAM | Storage | Price (US) |...
- What are the known OxygenOS 16 problems and bugs on the OnePlus 15?
OxygenOS 16 on the OnePlus 15 has experienced some launch issues. OnePlus is actively releasing updates to address them. AI Features: AI services temporarily...
- Is the OnePlus 15 good for gaming?
The OnePlus 15 is excellent for mobile gaming, offering one of the best gaming experiences on any smartphone. | Component | Details | |-----------|---------| |...
- How much does the OnePlus 15 cost and is it worth the price?
The OnePlus 15 offers strong value, starting at $899 USD for the base configuration—significantly less than competitors. | Configuration | US Price |...
- How long will the OnePlus 15 receive software updates?
The OnePlus 15 receives 4 years of Android OS updates plus 2 additional years of security patches, totaling 6 years of software support. | Support Type |...
- Does the OnePlus 15 have overheating problems?
The OnePlus 15 runs warmer than average during intensive tasks, though this is unlikely to be a practical concern for most users. | Condition | Temperature |...
- What are the OnePlus 15 display and screen specifications?
The OnePlus 15 features a premium 6.78-inch AMOLED display suitable for media consumption, gaming, and everyday use. | Specification | Details |...
