The OnePlus 15 vs Xiaomi 17 Ultra comparison comes down to priorities: OnePlus lists a 7,300mAh battery and 120W wired charging, while Xiaomi specifies a Leica-branded camera system with a 200MP telephoto lens. Both official product pages name the Snapdragon 8 Elite Gen 5, so the chipset name alone does not separate them. The best choice depends on whether battery and charging specifications, camera hardware, display size, or your local price matters most.
OnePlus 15 vs Xiaomi 17 Ultra specs
The figures below come from different regional manufacturer pages: OnePlus’s global specifications, Xiaomi’s India camera specifications and Xiaomi’s UK display specifications. Regional variants and availability may differ, so check the listing for your country before buying.
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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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| Specification | OnePlus 15 | Xiaomi 17 Ultra |
|---|---|---|
| Processor | Snapdragon 8 Elite Gen 5, according to OnePlus’s global specifications. | Snapdragon 8 Elite Gen 5, according to Xiaomi’s India specifications. |
| Display | 6.78 inches; 2772 × 1272; adaptive 1–120Hz, with up to 165Hz in gaming, according to OnePlus’s global specifications. | 6.9 inches; 2608 × 1200; 1–120Hz, according to Xiaomi’s UK specifications. |
| Memory and storage | 12GB RAM with 256GB storage, or 16GB RAM with 512GB storage, per OnePlus’s global specifications. | 16GB RAM with 512GB storage is the configuration discussed in the cited TechRadar review; that does not establish every available regional configuration. |
| Battery and charging | 7,300mAh typical equivalent capacity and 120W SUPERVOOC wired charging, per OnePlus’s global specifications. | Comparable battery capacity and charging figures are not stated in the cited Xiaomi specification information. |
| Rear cameras | Camera specifications are not stated in the cited OnePlus specification information. | India specifications list a Leica-branded 50MP Light Fusion 1050L main camera with a 1-inch sensor size, a 200MP 75–100mm telephoto camera and a 50MP 14mm ultra-wide camera. |
These are published specifications, not a head-to-head test. A matching processor name does not prove identical sustained performance, and camera resolution or battery capacity alone does not establish photo quality or endurance.
How the camera systems compare
Xiaomi’s listed camera hardware
Xiaomi’s India specification page describes a three-camera rear system: a 50MP main camera, a 200MP telephoto camera with a stated 75–100mm range, and a 50MP ultra-wide camera. That combination gives the Xiaomi a clearly specified long-telephoto option on paper. It is a relevant reason to consider the phone if zoom framing and a dedicated multi-camera system matter to you.
#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)
What the figures do—and do not—tell you
The cited OnePlus excerpt does not provide comparable rear-camera details, and the available specifications do not establish which phone produces better images. Sensor and megapixel figures cannot settle differences in processing, focusing, exposure, low-light performance or consistency. If photography is decisive, look for direct samples and tests covering the subjects and focal lengths you actually use rather than choosing by megapixels alone.
Battery, charging and display
OnePlus lists the larger quantified battery and faster specified wired charging
OnePlus lists a 7,300mAh typical equivalent battery capacity and 120W SUPERVOOC wired charging on its global page. Those are concrete capacity and charging specifications, not evidence that the phone lasts longer in everyday use or reaches a particular charge level in a particular time. No comparable Xiaomi battery or charging values are established in the cited specification information.
Xiaomi lists the larger screen; OnePlus lists a gaming refresh-rate peak
Xiaomi’s UK page lists a 6.9-inch display, compared with OnePlus’s 6.78-inch panel. Both pages list adaptive refresh rates up to 120Hz; OnePlus separately specifies up to 165Hz in gaming. That gaming condition matters: the 165Hz figure should not be read as the display’s general refresh rate. The listed resolutions are also different, so consider screen size, resolution and actual use rather than treating refresh rate as the only display distinction.
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OnePlus 15 vs Xiaomi 17 Ultra price difference
There is no reliable universal price difference to calculate from the available figures: they cover different markets and, for the Xiaomi, a different configuration comparison. TechRadar reports the following launch prices, which should not be mistaken for current October 2026 offers.
| Phone and configuration | Reported launch price | Source and qualification |
|---|---|---|
| OnePlus 15, 12GB/256GB | US$899.99; UK £849 | TechRadar reports these as launch prices. |
| OnePlus 15, 16GB/512GB | US$999.99; UK £979 | TechRadar reports these as launch prices. |
| Xiaomi 17 Ultra, 16GB/512GB | UK £1,299; Australia AU$1,799 | TechRadar reports these prices for the reviewed configuration. |
These prices are not matched across the same country and configuration, and they do not show current stock, discounts, taxes or warranty terms. To judge today’s difference, compare the same RAM and storage tier in your country, on the same date, and include local warranty and seller conditions. Verify that the Xiaomi variant you are considering is officially sold and supported in your market.
Quick Recap
Which phone should you choose?
Consider the OnePlus 15 if battery and charging specifications lead
- You value the listed 7,300mAh typical equivalent capacity and 120W SUPERVOOC charging.
- You want one of the listed 12GB/256GB or 16GB/512GB configurations, subject to local availability.
- You prefer to make the choice based on your local price and warranty rather than assuming a global price gap.
Consider the Xiaomi 17 Ultra if its camera hardware and larger screen appeal
- You want the specified 200MP telephoto camera with a 75–100mm range alongside main and ultra-wide cameras.
- You prefer the larger 6.9-inch display listed on Xiaomi’s UK page.
- You have confirmed that the configuration, regional software, warranty and support meet your needs.
Use these checks before paying
- Compare local prices for matching RAM and storage, and confirm the seller, stock status, taxes and warranty.
- For camera-led buying, examine independent side-by-side samples at wide, main and telephoto focal lengths.
- For battery-led buying, find endurance tests using comparable settings and workloads; capacity figures alone are not runtime measurements.
- Check the exact regional model and its software-support terms. The cited comparison does not establish every regional SKU, warranty, band or current support commitment.
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.
