The OnePlus 15 is the newer phone, with a newer named processor platform and a larger listed battery; the Galaxy S24 Ultra is an older Ultra-tier model whose cited camera hardware includes a 200 MP main camera and 5× optical telephoto. There is no evidence here for a single current, like-for-like price winner or for which phone takes better photos or lasts longer on a charge. Compare the exact regional model, storage, condition, seller and current price before deciding.
What kind of comparison is this?
This is not a same-generation contest. Comparison listings report the Galaxy S24 Ultra as announced on January 17, 2024, and the OnePlus 15 on October 27, 2025. Those are listing-reported announcement dates, and the phones also occupy different product positions: an older Samsung Ultra-tier model against a later OnePlus flagship. A newer release date or a higher specification on one line does not, by itself, establish which is the better phone for you.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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OnePlus 15 Dual-SIM 512GB ROM + 16GB RAM (GSM Only | No CDMA) Factory Unlocked 5G Smartphone (Sand... | $1,819.00 | Buy on Amazon |
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How do the specifications compare?
| Category | Samsung Galaxy S24 Ultra | OnePlus 15 |
|---|---|---|
| Processor | Snapdragon 8 Gen 3 for Galaxy, according to an indexed product catalog. | Snapdragon 8 Elite Gen 5 platform, according to OnePlus’s US specifications page. |
| Display | Exact display figures are not established by the Samsung evidence available for this comparison. | 6.78 inches; 2772 × 1272 (FHD+); 450 ppi; adaptive 1–120 Hz, with up to 165 Hz in gaming; Gorilla Glass Victus 2. |
| Rear cameras | 200 MP main camera with OIS, 50 MP telephoto with 5× optical zoom and 12 MP ultra-wide, according to an indexed product catalog. | Three 50 MP rear cameras: main, ultra-wide and telephoto with 3.5× optical zoom. OnePlus lists up to 120× digital zoom. |
| Battery and charging | Battery capacity and charging figures are not established by the Samsung source excerpt used here. | 7,300 mAh; the US specifications page lists 80 W SUPERVOOC wired and 50 W AIRVOOC wireless charging. |
| Memory and storage | A region-specific RAM and storage configuration is not established by the evidence available here. | The US specifications page lists 12 GB RAM/256 GB storage and 16 GB RAM/512 GB storage. |
OnePlus’s global specifications snippet lists 120 W SUPERVOOC charging, while its US page lists 80 W. These are regional figures, not values to combine into a single specification. Check the listing for the exact model sold in your country.
What do the camera numbers tell you—and what don’t they?
The cited hardware gives the S24 Ultra a 5× optical-zoom telephoto and the OnePlus 15 a 3.5× optical-zoom telephoto. The OnePlus listing also gives a maximum digital-zoom figure, but digital zoom is not the same as optical zoom. Megapixel counts and zoom ratios describe specifications, not the quality of photos in everyday conditions. The evidence available here contains no controlled camera tests, so it cannot establish which phone produces better images.
#1 Best Overall
- 6.78 inches, LTPO AMOLED, 1B colors,1272 x 2772 pixels
- 512GB Storage, 16GB RAM
- Android 16, OxygenOS 16, Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm), Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
- Rear: 50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, multi-directional PDAF, OIS, 50 MP, f/2.8, 80mm (periscope telephoto), 1/2.76", 0.64µm, 3.5x optical zoom, PDAF, OIS, 50 MP, f/2.0, 16mm, 116˚ (ultrawide), 1/2.88", 0.61µm, PDAF, Front: 32 MP, f/2.4, 21mm (wide), 1/2.74", 0.8µm, AF
- 161.4 x 76.7 x 8.1 mm (6.35 x 3.02 x 0.32 in)
Which display or performance figures favor each phone?
The OnePlus 15 has a documented 6.78-inch FHD+ display with adaptive refresh up to 120 Hz and a gaming maximum of 165 Hz. Comparable S24 Ultra display figures are not established in the cited Samsung excerpt, so a complete screen-to-screen verdict would require checking Samsung’s specifications for the relevant market. The OnePlus also has the newer named processor platform in the available specifications; that fact alone does not establish a real-world speed or efficiency advantage. No comparable performance test results are available here.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How should you compare prices?
The available prices are snapshots, not a current, matched comparison. OnePlus’s US launch page displayed “From $999.99” when indexed; that manufacturer-page figure can change and is not a guarantee of today’s price. A comparison aggregator reported ₹1,29,999 for the S24 Ultra and ₹85,999 for the OnePlus 15 at retrieval. Those rupee figures are third-party listing snapshots, not verified current offers or a universal price difference.
For a useful comparison, match all of the following before doing the arithmetic:
- Country and exact regional model or SKU.
- RAM and storage configuration.
- Condition: new, refurbished or used.
- Seller and any included discounts or charges.
- The date you checked the final price.
Do not compare a launch-page starting price in one country with an aggregator listing in another and treat the result as the amount you will save. Prices and configurations can vary by market, and the available snapshots do not establish matched offers.
Which phone should you choose?
Choose the OnePlus 15 if its verified listing fits your priorities
Its documented specifications include the newer named processor platform, a 7,300 mAh battery, a 6.78-inch display and a 3.5× optical telephoto. Confirm the local RAM/storage option and charging specification on the seller or manufacturer listing before purchase.
Consider the Galaxy S24 Ultra if its camera configuration and price suit you
The cited S24 Ultra camera hardware includes a 200 MP main camera and a 5× optical telephoto. Whether those specifications are more useful to you—and whether the phone is a better value at the offer you find—depends on the price, condition and configuration of the specific unit. The available evidence does not establish a comparable current Samsung price, display specification, battery figure or software-support duration.
Quick Recap
What to verify before buying
- Check the official specification page for the phone sold in your country, especially for Samsung display, battery and charging details that are not established here.
- Confirm the exact storage and RAM tier; do not assume every market offers the same configurations.
- Check charging figures against the regional OnePlus listing rather than applying the global 120 W figure to the US model.
- Compare current offers only after matching region, configuration, condition and seller.
- Look up software-support terms and repair options for the exact market if those are important to long-term ownership; no comparative support or repairability evidence is established here.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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