OnePlus 15 VS Vivo iQOO 15

In terms of physical footprint, these two phones are remarkably close. Both share an identical 8.1 mm thickness and nearly the same width, making them feel practically indistinguishable in hand on those dimensions. The OnePlus 15 is marginally more compact — 161.4 mm tall versus 163.7 mm for the iQOO 15 — and slightly lighter at 215 g compared to 220 g. In isolation, a 5 g difference is imperceptible in daily use, but combined with the shorter height, the OnePlus 15 is the fractionally easier one-handed device of the two.

Where a more meaningful gap emerges is in water resistance certification. Both phones are rated waterproof to 1.5 m, but the OnePlus 15 carries an IP69 rating while the iQOO 15 is certified at IP68. IP69 adds protection against high-pressure, high-temperature water jets — a scenario irrelevant to most users but indicative of a more robust seal overall. For everyday protection against rain, splashes, and accidental submersion, both phones perform identically; the IP69 advantage only matters in edge-case environments.

Overall, the two devices are near-twins in design. Neither has a rugged build, neither folds, and their dimensions differ only at the margins. However, the OnePlus 15 holds a clear, if narrow, edge in this category: it is slightly lighter, slightly more compact, and carries the higher IP69 rating — making it the more refined design of the two on paper.

The sharpness and brightness story heavily favors the iQOO 15. Its 1440 x 3168 resolution at 508 ppi versus the OnePlus 15's 1272 x 2772 at 450 ppi means noticeably crisper text and finer detail — a difference that is genuinely visible when reading small type or viewing high-resolution images. More dramatically, the iQOO 15's 2600 nits typical brightness dwarfs the OnePlus 15's 800 nits, translating to far superior legibility in direct sunlight — one of the most practical day-to-day display traits.

The OnePlus 15 pushes back with a 165Hz refresh rate against the iQOO 15's 144Hz, which delivers marginally smoother scrolling and animations, though the real-world gap between those two figures is subtle for most users. More consequential is that the OnePlus 15 supports Dolby Vision — a premium HDR format with dynamic metadata that produces more accurate, scene-by-scene color grading on compatible content — while the iQOO 15 tops out at HDR10+. The OnePlus 15 also includes branded damage-resistant glass, offering a layer of scratch and impact protection the iQOO 15 lacks.

Taken together, this is a trade-off between two different display priorities. The iQOO 15 is the stronger panel for visual fidelity and outdoor use, while the OnePlus 15 counters with Dolby Vision and physical glass protection. For most users, though, the iQOO 15 holds the display edge — the resolution advantage and especially the enormous brightness lead are harder to ignore than the refresh rate delta or Dolby Vision support.

At the hardware level, these two phones are identical — same Qualcomm Snapdragon 8 Elite Gen 5 chip, same Adreno 830 GPU, same 16 GB of RAM at 5300 MHz, and the same 1 TB of storage. Every architectural detail, from cache sizes to memory bandwidth, is shared. In theory, they should perform exactly the same. In practice, benchmark results tell a more nuanced story.

The iQOO 15 posts a substantially higher AnTuTu score of 4,030,245 versus the OnePlus 15's 3,434,000 — a gap of roughly 17% that suggests the iQOO 15 is tuned more aggressively for sustained system-wide throughput, likely through more permissive thermal or power governors. The OnePlus 15 flips the result in Geekbench 6, however, leading in both single-core (3,726 vs 3,234) and multi-core (11,199 vs 10,059) tests. Since Geekbench focuses on CPU-bound tasks over shorter bursts, this suggests the OnePlus 15 is better optimized for peak CPU responsiveness — the kind of performance that matters for app launches, rendering, and snappy UI interactions.

With identical silicon and a benchmark split that depends entirely on what you are measuring, this category is effectively a tie for real-world use. Neither phone will feel faster than the other in day-to-day tasks. The AnTuTu gap may reflect sustained workload tuning rather than a meaningful user-facing advantage, and both devices represent the same top-tier performance tier regardless of which metric you weight.

On paper, both phones open with the same headline triple-camera setup — three 50 MP lenses and identical maximum video resolution — which makes the meaningful differences easy to overlook. Dig deeper and the OnePlus 15 pulls ahead on several practical fronts. It includes optical image stabilization (OIS), which the iQOO 15 entirely lacks; OIS is one of the single most impactful camera features for everyday users, directly reducing blur in low-light shots and smoothing out handheld video. Paired with laser autofocus — also absent on the iQOO 15 — the OnePlus 15 is better equipped to lock focus quickly and accurately in challenging conditions.

The telephoto gap reinforces this advantage. The OnePlus 15 offers 3.5x optical zoom versus 3x on the iQOO 15 — a modest but real difference for portrait compression and distant subjects. In video, the divergence is even sharper: the OnePlus 15 supports both HDR10 and Dolby Vision recording, while the iQOO 15 supports neither, meaning footage from the OnePlus 15 will retain significantly more dynamic range and color fidelity on compatible playback devices. The iQOO 15 does edge out one minor win — its front camera's f/2.2 aperture is slightly wider than the OnePlus 15's f/2.4, letting in a touch more light for selfies.

Across this category, the OnePlus 15 holds a clear and meaningful advantage. OIS alone would be enough to tip the scales, but the combination of better zoom reach, laser autofocus, and superior video format support makes it the stronger camera system of the two by a comfortable margin.

This is the rarest outcome in a spec comparison: a perfect tie across every single data point. Both phones launch on Android 16, share an identical feature set spanning privacy controls, multitasking, and AI capabilities, and carry the same limitations — no direct OS updates, no Wi-Fi password sharing, no focus modes. There is not a single differentiator to analyze in this category.

What the shared spec sheet does confirm is a strong baseline for both devices. Privacy-conscious users get camera and microphone access controls, location permissions, app tracking blocks, and clipboard warnings on either phone. Productivity features like split-screen, Picture-in-Picture, and offline voice recognition are present on both, and dynamic theming ensures each phone can be visually personalized. Neither phone receives direct OS updates from Google, meaning both rely on their respective manufacturers for Android patches and upgrades.

With zero divergence across all tracked operating system specs, this category is an unambiguous draw. A buyer's OS experience will be determined entirely by the manufacturer's software skin and update cadence — neither of which is reflected in the provided data — rather than by any structural difference between the two platforms.

Every metric in this category breaks in favor of the OnePlus 15. Its 7,300 mAh battery edges out the iQOO 15's 7,000 mAh — a 300 mAh gap that, while not dramatic, consistently adds a small buffer of endurance over a full day. More impactful is the charging speed advantage: 120W wired versus 100W on the iQOO 15 means meaningfully faster top-ups from empty, shaving several minutes off a full charge cycle — a real convenience difference for users who rely on quick pit-stop charging.

Wireless charging follows the same pattern. The OnePlus 15 supports 50W wireless compared to 40W on the iQOO 15 — both are fast by wireless standards, but the OnePlus 15 maintains its lead even when the cable is put away. The most functionally distinct gap, however, is reverse wireless charging: the OnePlus 15 supports it, the iQOO 15 does not. This allows the OnePlus 15 to act as a wireless charging pad for earbuds or a smartwatch, a genuinely useful convenience the iQOO 15 simply cannot offer.

Across capacity, wired speed, wireless speed, and reverse charging, the OnePlus 15 wins this category cleanly. No single advantage is enormous in isolation, but the accumulation of edges across every battery dimension points consistently in one direction.

Both phones share the same core audio foundation: stereo speakers, no 3.5 mm headphone jack, and support for aptX HD and aptX Adaptive. Of those, aptX Adaptive is the most significant — it is a modern, variable-bitrate Bluetooth codec capable of delivering high-resolution audio with low latency, effectively making the older aptX and aptX HD codecs redundant for any headphones that support it.

The only spec separating the two is that the iQOO 15 also lists support for standard aptX, which the OnePlus 15 omits. In practice, this gap is negligible: aptX is a legacy codec, and any device capable of aptX will almost certainly also support aptX HD or aptX Adaptive, which both phones already cover. It offers no meaningful advantage for users pairing modern wireless audio gear.

Given the near-identical codec support and matching speaker configuration, this category is effectively a tie. The iQOO 15's additional aptX entry looks like a difference on a spec sheet but carries no real-world audio benefit, leaving both phones on equal footing for wireless listening quality and speaker output alike.

Much like the operating system category, connectivity is a domain where these two phones are simply identical. Both support Wi-Fi 7, Bluetooth 6, 5G, NFC, and USB 3.2 Type-C — representing a thoroughly modern and future-proofed connectivity stack. Wi-Fi 7 delivers significantly higher throughput and lower latency than Wi-Fi 6, while Bluetooth 6 brings improved connection stability and precision distance features; users of either phone benefit equally from these advances.

The sensor and feature loadout is equally matched: both carry a full navigation suite with GPS, Galileo, gyroscope, compass, accelerometer, and barometer, alongside an infrared sensor and fingerprint scanner. The data speeds — 10,000 Mbits/s download and 3,500 Mbits/s upload — are also shared, reflecting the same 5G modem capabilities. Neither phone supports satellite SOS, crash detection, or an external memory slot.

With every single connectivity and feature spec aligning perfectly, this category is a complete tie. There is no angle — wireless, wired, sensor, or otherwise — where one phone offers anything the other does not, and both represent the same high connectivity ceiling for 2025 flagship devices.

The miscellaneous category offers very little to separate these two devices — all four tracked specs are identical. Both include a video light, and neither features a sapphire glass display, a curved screen, or an e-paper secondary panel. With such a narrow data set and no divergence within it, there is simply no differentiator to analyze here.

This category is an unambiguous tie. Any purchasing decision will rest entirely on the more substantive spec groups covered elsewhere in this comparison.