OnePlus 15 Review: Ultra Performance, 165Hz Gaming, and Flagship Experience

As the latest flagship released among its sub-brands, this year’s OnePlus 15 can be said to be the most controversial: from last generation’s “all-around ultra-Pro” to this generation’s “performance Ultra super flagship,” the brand-new OnePlus 15 focuses on extreme performance. Its unique 165Hz high-refresh display, paired with the latest Qualcomm Snapdragon flagship processor, brings a groundbreaking upgrade in gaming performance.

The first impression of the OnePlus 15 is “simple yet not simplistic.” The minimalist flat-slab design, combined with the new family-style metal cube rear camera Deco introduced since the OnePlus 13T, maintains personality while enhancing brand recognition and making the entire device look more refined. The OnePlus 15 comes in three color options, with the most distinctive being Original Sand Dune—an understated matte brown-gray with low saturation. The metal frame and rear camera Deco use a special finishing process for a smooth and delicate texture. I also saw the other two colors: Absolute Black is a pure, deep black with strong character, while Misty Purple has low saturation and appeals to users of all genders.

After two generations of dual-curved and micro-curved screens, the OnePlus 15 finally returns to a screen form more widely accepted by users: a completely flat display, which works better with tempered glass screen protectors and does not affect touch control during gaming. Most impressive is the 1.15mm ultra-narrow bezel control on the front—much narrower than the iPhone 17 Pro—and the bezels are perfectly symmetrical on all sides, enhancing immersion during content viewing and gaming. The in-hand feel is also excellent. Despite housing a 7300mAh battery, the thickness remains under 8.2mm and the weight is only 211g. Combined with slim bezels, it’s considered lightweight for a 6.78-inch flat-screen device. With large R-curve corners, a precisely polished middle frame, and a 50:50 balanced chassis, both one-handed daily use and landscape gaming feel outstanding.

“Performance Ultra” isn’t just a slogan. The hardware configuration and tuning allow the OnePlus 15 to stand out among competitors. Its 165Hz full-frame gaming experience makes it exceptionally strong in the performance and gaming category, making it the first device I think of when considering performance phones or gaming phones. As a OnePlus flagship, the OnePlus 15 naturally uses this year’s latest Qualcomm Snapdragon flagship—the Snapdragon 8 Gen 5 Special Edition (the new naming may confuse many people; the OnePlus Ace 6T is about to debut with the Snapdragon 8 Gen 5). Paired with LPDDR5X Ultra memory and UFS 4.1 storage, it forms the strongest performance triangle available. While many smartphones share similar hardware, OnePlus 15 dares to call itself Performance Ultra because of its tuning strength, cooling system, and battery configuration. In AnTuTu tests, the OnePlus 15 easily surpasses 4 million points. On the latest AnTuTu performance leaderboard, it ranks second only to the RedMagic 11 Pro+, which has more RAM.

Outstanding performance is supported by OnePlus’s self-developed WindChase Gaming Engine. Unlike many gaming phones that rely on external chips for enhancements, WindChase adjusts performance from the hardware base, allowing the Snapdragon 8 Gen 5 Special Edition’s CPU, GPU, and NPU to run at full capacity simultaneously. Sounds incredible, right? In real-world tests, my favorite title, Honor of Kings, runs at an average of 120 FPS under extreme quality + 120 FPS mode. Even the 5% low-frame moments remain at 120 FPS, with the frame curve almost completely flat. After 20 minutes of gameplay, the temperature only rises from 35°C to 38°C—warm but never hot. Even with extreme quality + ultra-high refresh rate, performance demand isn’t excessive, and Genshin Impact also runs smoothly at native 120 FPS.

But these two games don’t fully showcase the OnePlus 15’s uniqueness. This time, the device features a 165Hz high-refresh screen that allows mobile games to run at 165 FPS. Before experiencing it myself, I assumed it was just a gimmick—after all, hardware means little without ecosystem support. But with games like Delta Force and League of Legends: Wild Rift supporting 165 FPS, I realized after trying it that this level of smoothness is truly “impossible to go back from.”

In Delta Force’s native 165 FPS mode, the average frame rate reaches 165.4 FPS, with the 5% low frame rate at 162 FPS—extremely fluid. For FPS games, a 165Hz display shows 45 more frames per second than a standard 120Hz screen, delivering smoother visuals and more continuous motion trajectories, helping you spot enemies earlier and react faster. Beyond pure performance, the OnePlus 15 includes an independent Lingxi touch chip and the G2 eSports network chip. Its 3200Hz instantaneous touch sampling rate is the highest in the industry, and five-finger sampling reaches 330Hz, ensuring accurate skill activation.

With performance and gaming experience maximized, heat dissipation and battery life—two major pain points in modern smartphones—are also areas where OnePlus excels. The new Glacier Cooling System has been upgraded again, using a large vapor chamber combined with high-performance graphite to enhance thermal conductivity, while aerogel insulation improves comfort in frequently touched areas. During extended gaming sessions, the OnePlus 15 maintains excellent temperature control with no noticeable overheating.

Battery life is also noteworthy. Although many mid-range phones now reach 8000mAh, the OnePlus 15’s 7300mAh battery still allows heavy usage throughout the day without anxiety, even at 20% remaining. Charging speed has improved as well, now supporting up to 120W SuperVOOC fast charging, reaching more than 50% in around 15 minutes. With the OnePlus 15, charging becomes highly flexible—just charge whenever convenient.

“Is dropping the screen from 2K to 1.5K a downgrade?” This is a common doubt about the OnePlus 15. Regardless of technical limitations preventing 2K+165Hz, I can clearly say from actual experience that 1.5K is absolutely not an issue. It remains sharp, and combined with 165Hz, it’s actually a “precision optimization.”

The OnePlus 15 features a 6.78-inch third-generation Oriental Screen with 1.5K resolution (2772×1272) and 450 PPI. The iPhone’s Retina display has long been praised, yet its PPI is only 460—making it nearly impossible for the naked eye to distinguish the sharpness difference between the OnePlus 15 and the iPhone 17 Pro. Furthermore, nobody complains about the iPhone 17 Pro’s resolution. In fact, the OnePlus 15’s so-called “downgrade” improves power consumption: 1.5K displays consume less power and generate less heat compared to 2K screens, contributing significantly to longer battery life.

Like the OnePlus 12 and 13, its display is co-developed with BOE and uses upgraded X3 luminous materials for improvements in brightness, color, and efficiency. It also introduces Android’s first true hardware-level 1-nit ultra-low brightness mode for better eye comfort. As a heavy smartphone user, even in dim nighttime environments, I’ve never experienced eye strain or discomfort while using this screen.

The 165Hz refresh rate isn’t limited to gaming—everyday apps can use it too. In developer mode, the OnePlus 15 currently supports four social platforms at 165Hz: Weibo, WeChat, and Xiaohongshu. Scrolling through feeds feels noticeably smoother. If you don’t notice it, try using a high-refresh device for a while, then switch to a 60Hz iPhone 15 standard model—you’ll immediately feel the stutter.

For daily photography, LUMO Image produces colors nearly identical to previous Hasselblad tuning. Thanks to OPPO’s imaging algorithm advantages, both the main camera and the telephoto lens deliver excellent results. Although the OnePlus 15 compromises slightly in imaging hardware, its overall setup remains flagship-level: Sony IMX906 main camera + Samsung JN5 periscope telephoto + Omnivision OV50D ultra-wide, all 50MP, supporting multiple focal lengths. The periscope lens features 3.5× optical zoom and dual-axis OIS, allowing stable shots even with hand shake. The 85mm portrait focal length captures natural background blur, delicate skin texture, and produces social-media-ready shots without editing. Night photography is also strong. As someone who carries both an iPhone 17 Pro and OnePlus 15 daily, I prefer using the OnePlus 15 for photos.

The OnePlus 15 also benefits from ColorOS’s “Aurora Engine” and “Tidal Engine.” Since ColorOS 15, the system has gained a dominant user-experience advantage, earning the nickname “the silky chocolate of smartphone UI.” The OnePlus 15 debuts with ColorOS 16, with upgrades in smoothness, AI features, and cross-ecosystem connectivity. Its smoothness needs no further explanation—on CoolAPK, ColorOS 16 scores 9.4, the highest among major smartphone brands. In AI, the Super XiaoBu assistant integrates the full-power DeepSeek model, offering system-wide AI functions. It can pop up automatically within apps, enabling features like voice transcription even during WeChat calls. For users who dual-carry an iPhone and OnePlus, the cross-ecosystem features are incredibly convenient: beyond file sharing and photo transfer, the OnePlus 15 can take over iPhone calls and SMS via Bluetooth—making the iPhone effectively a secondary device.

While it’s undeniable that the OnePlus 15 makes certain trade-offs compared to the previous generation, its combined performance in design, hardware, imaging, and battery life still places it firmly in flagship territory. Compared with similarly priced models, the OnePlus 15 isn’t about taking a radical path but carving out its own niche as a performance Ultra super flagship. If you’re a mobile gamer—especially an FPS player—the 165Hz full-frame gaming experience will be irresistible. Even if you’re not a gamer, its balanced overall performance can easily meet the needs of most users.