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The OnePlus 15R and vivo X300 Ultra suit different priorities: OnePlus highlights gaming, a fast-refresh display and a larger listed battery, while vivo centers its phone on a multi-focal ZEISS camera system and advanced video. Published specifications show those differences, but they do not establish which phone takes better photos, lasts longer or performs better in sustained gaming. A reliable same-market price gap is also not established by the official listings cited here.
OnePlus 15R vs vivo X300 Ultra: key specs
The figures below come from manufacturers’ published specifications. Regional configurations and features may vary, so the listed memory and price context should not be treated as globally uniform.
| Category | OnePlus 15R | vivo X300 Ultra | What it means |
|---|---|---|---|
| Display | 6.83-inch, 2800 × 1272, 10-bit color; up to 165 Hz in supported apps | 6.82-inch, 3168 × 1440 AMOLED; adaptive 1–144 Hz on the global page | OnePlus lists the higher maximum refresh rate; vivo lists the higher resolution. Both rates depend on app support. |
| Processor | Snapdragon 8 Gen 5 | Snapdragon 8 Elite Gen 5 | Chip names alone do not establish real-world speed, heat or sustained performance. |
| Rear cameras | 50 MP Sony IMX906 main camera with OIS; 8 MP ultrawide | 50 MP ultrawide, 200 MP 35 mm main camera and 200 MP 85 mm telephoto in the global presentation | vivo specifies more varied rear-camera hardware, including a dedicated telephoto camera. Megapixel counts do not predict image quality by themselves. |
| Video | Up to 4K at 120 fps in specified modes | Multi-focal 4K at 120 fps, with 10-bit Log and Dolby Vision modes promoted on the global page | Supported focal lengths, formats and workflow matter more than comparing the frame-rate label alone. |
| Battery and charging | 7,400 mAh typical; 55 W SUPERVOOC listed, with up to 80 W using a specified OnePlus adapter | 6,600 mAh typical; 100 W wired and 40 W wireless charging on the global page | OnePlus lists more battery capacity; vivo lists higher wired charging and wireless charging. These ratings do not establish comparative battery life. |
| Memory and storage | 12 GB RAM; 256 GB or 512 GB storage on the cited US specification page | 16 GB RAM and 512 GB storage on the cited India store configuration; other regions may differ | Compare the same market and storage tier before making a buying decision. |
| Software | OxygenOS 16 based on Android 16 on the cited specification page | Five years of OS upgrades and seven years of security maintenance promised on the global page | vivo’s periods are a published commitment; check the official terms for your region. |
OnePlus’s 165 Hz mode is limited to listed apps for 144/165 Hz operation. vivo’s 144 Hz support is likewise limited to apps or games that support it. OnePlus 15R specifications; vivo X300 Ultra global specifications.
Which phone has the better camera?
On paper, the vivo X300 Ultra offers the more versatile rear-camera system. Its global presentation specifies 14 mm, 35 mm and 85 mm ZEISS camera focal lengths, including dedicated 200 MP main and telephoto hardware. The OnePlus 15R’s listed rear cameras are a 50 MP main camera with optical image stabilization and an 8 MP ultrawide.
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That hardware difference supports a choice based on shooting flexibility: vivo lists a dedicated telephoto camera and several focal lengths, while the OnePlus specification is less expansive. It does not prove which phone produces better photos; no hands-on comparative image test is established here.
Does the vivo telephoto extender come with the phone?
No. vivo identifies its ZEISS Telephoto Extender Gen 2 Ultra as an accessory, not a built-in focal length or standard-phone feature. With the extender attached and the relevant telephoto setting enabled, vivo says the system can reach a 400 mm-equivalent optical focal length. The standard Gen 2 extender is described as 200 mm equivalent. These are accessory-dependent claims. See vivo’s X300 Ultra imaging and accessory details.
vivo also names an X300 Ultra Photographer Kit and Imaging Grip. The grip is compatible with the X300 Ultra, sold separately, and described as including a 2,300 mAh battery. Accessory prices and regional availability are not established here; confirm the exact model and included components in your market before buying.
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The OnePlus 15R has the higher listed peak refresh rate at up to 165 Hz in supported apps, which aligns with OnePlus’s gaming emphasis. The vivo X300 Ultra has the higher listed display resolution—3168 × 1440 versus 2800 × 1272—and an adaptive 1–144 Hz range on its global page.
Rank #2
- 6.83 inches, AMOLED, 1B colors, 1272 x 2800 pixels
- 512GB Storage, 12GB RAM
- Android 16, OxygenOS 16, Qualcomm SM8845 Snapdragon 8 Gen 5 (3 nm), Octa-core (2x3.8 GHz Oryon V3 Phoenix L + 6x3.32 GHz Oryon V3 Phoenix M)
- Rear: 50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, PDAF, OIS, 8 MP, f/2.2, 16mm, 112˚ (ultrawide), 1/4.0", 1.12µm, Front: 32 MP, f/2.0, 25mm (wide), AF
- 163.4 x 77 x 8.1 mm or 8.3 mm
Neither specification settles which phone feels smoother in every game or sustains performance longer. Refresh rate is subject to app support, and processor names do not substitute for testing under comparable gaming conditions.
Which has the bigger battery and faster charging?
The OnePlus 15R lists a 7,400 mAh typical battery, compared with 6,600 mAh typical for the vivo X300 Ultra. vivo lists faster charging ratings: 100 W wired and 40 W wireless on its global page. OnePlus lists 55 W SUPERVOOC, or up to 80 W with a specified OnePlus adapter.
These are manufacturer ratings, not a direct battery-life or charging-time comparison. Actual endurance and charging results are not established by the published capacities and wattages alone.
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What is the price difference?
An exact, defensible price difference is not established because the official listings cited here do not provide comparable prices for the same market and date. The vivo India store displayed ₹159,999 for its Victory Green 16 GB + 512 GB X300 Ultra configuration, with ₹199,999 shown as MRP, on the page accessed 4 October 2026. This is a volatile India-store listing, not a universal price or guaranteed checkout amount. Check the vivo India store listing.
Rank #3
- World's First Snapdragon 8 Gen 5: Powered by the Snapdragon 8 Gen 5, plus a custom Wi-Fi chip and dedicated Touch Response chip, you get lightning-fast speeds, stable connections, and ultra-responsive touch control.
- Impossibly Smooth 165Hz Display: Experience extreme smoothness on a 165Hz, 1.5K flagship display powered by our 3200Hz Touch Response Chip for lightning-fast interactions.
- Our largest-ever 7,400mAh battery:Power up your day with 80W SUPERVOOC charging for power that last all day and beyond.
- Industry's Most Complete IP Ratings:Backed by the industry's most complete IP ratings, the OnePlus 15R doesn't even blink at dust storms, and shrugs off powerful water blasts.
- OxygenOS 16 delivers a faster, smoother, and more intuitive experience, with refined design, smarter features, and enhanced performance that keeps up with your day.
The official OnePlus pages cited here did not expose a comparable OnePlus India price. Do not subtract a price from a different country or currency and call the result a direct gap. For a useful comparison, check current prices in the same market, match storage tiers where possible, and distinguish a current selling price from launch price or MRP. Taxes and discounts can also affect the amount payable.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which phone should you choose?
- Consider the OnePlus 15R if its listed gaming-oriented feature set, 165 Hz maximum refresh rate or larger typical battery capacity better matches your priorities.
- Consider the vivo X300 Ultra if you want the more varied published camera hardware, multi-focal video features or the option to add vivo’s telephoto accessories.
- Compare locally before deciding if price is decisive: configurations, bands, features and prices can vary by region, and the cited India listings do not establish a direct price gap.
These are specification-based trade-offs, not a verdict from comparative testing. The published information does not establish actual camera quality, battery life, sustained gaming performance or overall value.
Water-use note for the vivo X300 Ultra
vivo’s product guidance says: “Do not immerse the phone in water during daily use or expose it to solutions such as seawater or other liquids such as beverages.” vivo also says water resistance may diminish through daily use and liquid damage is not covered by warranty. Read the guidance for the exact model and region before relying on water resistance. vivo X300 Ultra product guidance.
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