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The OnePlus 15 vs Xiaomi 17 Ultra choice comes down to priorities: OnePlus publishes a 7,300mAh battery and 120W wired charging, while Xiaomi specifies a Leica-branded rear camera system with a 200MP telephoto camera. Both list the Snapdragon 8 Elite Gen 5, so the chipset name alone does not separate them. Neither set of specifications proves which phone takes better photos or lasts longer in everyday use.
OnePlus 15 vs Xiaomi 17 Ultra specs at a glance
The figures below come from different regional product pages: OnePlus’s global specifications, Xiaomi’s UK display specifications, and Xiaomi’s India camera specifications. Regional models and availability may differ.
| 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/256GB or 16GB/512GB, according to OnePlus’s global specifications | 16GB/512GB is the configuration discussed in TechRadar’s review; that does not establish the complete lineup in every market |
| Rear cameras | Full camera details are not established by the cited OnePlus specification excerpt | Leica-branded system: 50MP main camera with a listed 1-inch sensor size, 200MP 75–100mm telephoto, and 50MP 14mm ultra-wide, according to Xiaomi’s India specifications |
| Battery and charging | 7,300mAh typical equivalent capacity; 120W SUPERVOOC wired charging, according to OnePlus’s global specifications | Comparable battery and charging figures are not stated in the cited Xiaomi specification excerpt |
How the camera systems compare
Xiaomi’s published hardware is the camera-focused proposition
Xiaomi’s India specification page describes a 50MP main camera, a 200MP telephoto camera with a 75–100mm range, and a 50MP ultra-wide camera. Those focal lengths and the dedicated telephoto hardware make the camera system the clearest paper distinction between the phones in the available specifications. Megapixel counts and sensor size do not, by themselves, establish image quality; results depend on factors such as processing, lighting, and the photographer’s use.
OnePlus camera details are not fully established here
The cited OnePlus global specification excerpt does not provide a complete rear-camera breakdown. That is not evidence that the OnePlus 15 has an inferior camera. To choose on photography, compare full regional specifications and direct image tests, especially for zoom, ultra-wide shots, and low-light scenes.
#1 Best Overall
- 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.
Battery and charging: OnePlus publishes the clearer figures
OnePlus lists a 7,300mAh typical equivalent battery capacity and 120W SUPERVOOC wired charging. These are published specifications, not a controlled battery-endurance result or a guarantee of how quickly every user’s phone will charge. The cited Xiaomi specification excerpt does not provide a comparable battery or charging figure, so it cannot support a like-for-like numerical comparison.
If capacity and a stated high wired-charging rate are central to your decision, the OnePlus specification is the more concrete evidence. For actual time between charges, look for independent tests using comparable settings and workloads rather than inferring endurance from capacity alone.
Display and performance
Screen size and refresh rate
Xiaomi’s UK page lists a 6.9-inch display with a 1–120Hz refresh rate. OnePlus’s global page lists a 6.78-inch display with adaptive 1–120Hz refresh and a maximum of 165Hz specifically in gaming. The stated 165Hz is a gaming-mode figure, not the phone’s general refresh-rate ceiling for every task. Xiaomi’s listed display is larger; whether that is preferable depends on whether you value screen area or a smaller handset.
Same chipset name, not proof of identical speed
Both manufacturers name the Snapdragon 8 Elite Gen 5. That makes the platform name a tie on paper, but does not establish identical sustained performance, thermal behavior, or performance in a particular app. The published specifications cited here include no controlled head-to-head performance test.
Rank #2
- 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)
Price difference: compare local, like-for-like offers
There is no reliable universal price difference to quote from the available figures: the reported launch prices cover different countries and configurations, and are not current offers. TechRadar reports the following launch prices; the table preserves the market and configuration for each figure.
| Phone and configuration | Reported launch price | Source and qualification |
|---|---|---|
| OnePlus 15, 12GB/256GB | US$899.99; UK £849 | Reported by TechRadar in its OnePlus 15 vs OnePlus 15R article as launch pricing |
| OnePlus 15, 16GB/512GB | US$999.99; UK £979 | Reported by TechRadar in its OnePlus 15 vs OnePlus 15R article as launch pricing |
| Xiaomi 17 Ultra, 16GB/512GB | UK £1,299; Australia AU$1,799 | Reported by TechRadar in its Xiaomi 17 Ultra review as launch pricing |
These are review-reported launch prices, not verified prices for October 2026. They do not account for current discounts, taxes, stock, or equivalent warranty terms, and the listed configurations and markets are not fully matched. To calculate a useful price difference, compare the same RAM and storage tier in your country, at the same time, and include seller, warranty, and any delivery or tax costs.
Which phone should you choose?
Consider the OnePlus 15 if battery specifications are your priority
- You value the listed 7,300mAh typical equivalent capacity and 120W SUPERVOOC charging specification.
- You want one of the listed OnePlus configurations: 12GB/256GB or 16GB/512GB.
- You prefer the 6.78-inch display, or want the listed up-to-165Hz gaming mode.
- The local price, stock, and warranty work for you.
Consider the Xiaomi 17 Ultra if camera hardware and screen size matter more
- You want the published Leica-branded camera arrangement, including a 200MP telephoto with a 75–100mm range.
- You prefer the 6.9-inch display listed on Xiaomi’s UK specification page.
- You can verify a suitable local configuration, price, warranty, and availability.
Before buying either phone, check your region’s product page and retailer listing. The published specifications used here span OnePlus’s global page, Xiaomi’s India camera page, and Xiaomi’s UK display page; they do not establish every local SKU, warranty, software-support commitment, or current offer.
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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.
