Honor 400 Pro 5G VS OnePlus Ace 6

Both phones share a waterproof build with no rugged form factor and no folding mechanism, but the details reveal meaningful differences. The Honor 400 Pro 5G is the more compact and lighter of the two, measuring 156.5 × 76.1 × 8.1 mm and weighing 205 g, compared to the OnePlus Ace 6 at 163.4 × 77 × 8.3 mm and 213 g. That 7 mm height gap and 8 g weight difference are noticeable in daily one-handed use — the Honor will feel more manageable for users with smaller hands or those who prioritize pocketability.

Where the OnePlus Ace 6 pulls ahead is its IP69 rating versus the Honor's IP68. While IP68 covers prolonged submersion in water, IP69 adds resistance to high-pressure, high-temperature water jets — a meaningfully higher standard. In practice, this makes the Ace 6 more durable in scenarios involving forceful water exposure, such as rinsing under a strong tap or exposure to steam, not just accidental submersion.

In terms of design, the Honor 400 Pro 5G has the edge in ergonomics thanks to its smaller footprint and lower weight. However, the OnePlus Ace 6 holds a clear advantage in water resistance certification, offering a higher level of protection that could matter for users who frequently expose their phone to water in more demanding conditions. Which trade-off matters more depends entirely on the user's priorities.

On paper, the two screens look nearly identical — both OLED/AMOLED panels at similar sizes and resolutions, with pixel densities of 460 ppi (Honor) and 450 ppi (OnePlus) that are indistinguishable to the naked eye. The real story, however, lies in two wildly divergent priorities. The Honor 400 Pro 5G delivers a staggering 5000 nits of typical brightness, against the OnePlus Ace 6's 800 nits. That is not a minor gap — it means the Honor will remain clearly legible in harsh direct sunlight where the Ace 6 may struggle, a tangible everyday advantage for outdoor users.

The OnePlus Ace 6 fights back on multiple other fronts. Its 165Hz refresh rate versus the Honor's 120Hz produces noticeably smoother scrolling and more fluid animations — a difference gamers and power users will feel immediately. On top of that, the Ace 6 supports a full HDR trio — HDR10, HDR10+, and Dolby Vision — meaning streaming content from compatible platforms will render with wider dynamic range and more accurate colors. The Honor supports none of these standards. The Ace 6 also adds branded damage-resistant glass, offering physical screen protection the Honor lacks.

This group ends in a split verdict driven by use case. The Honor 400 Pro 5G has a commanding edge in outdoor visibility thanks to its exceptional brightness. The OnePlus Ace 6 is the stronger choice for media consumption and fluid interaction, combining a higher refresh rate, comprehensive HDR support, and better screen protection. Users who spend time outdoors should lean toward the Honor; those who prioritize streaming quality and gaming smoothness will find the Ace 6 more rewarding.

The chipset gap here is generational and consequential. The Honor 400 Pro 5G runs on the Snapdragon 8 Gen 3, a strong flagship chip, but the OnePlus Ace 6 steps up to the Snapdragon 8 Elite — Qualcomm's next-tier silicon built on a tighter 3 nm process versus the Honor's 4 nm. The Geekbench 6 scores make the gap impossible to ignore: the Ace 6 posts 10059 multi-core and 3234 single-core, against the Honor's 7325 and 2213 respectively. That is roughly a 37% multi-core advantage — felt in sustained workloads like video editing, AI tasks, and prolonged gaming sessions.

What makes the OnePlus result even more impressive is efficiency. Despite its superior performance, the Ace 6 carries a TDP of 8.2W versus the Honor's 12.5W — meaning it does more while generating less heat and drawing less power, a direct benefit of the newer node. The Ace 6 also ships with 16 GB of RAM at 5300 MHz and 1 TB of storage, compared to 12 GB / 4800 MHz and 512 GB on the Honor, widening the practical gap for heavy multitaskers and users with large media libraries. The Adreno 830 GPU, clocked at 1100 MHz versus the Honor's 900 MHz Adreno 750, reinforces the Ace 6's lead in graphics-intensive scenarios.

The OnePlus Ace 6 wins this category decisively. Across every performance dimension — raw CPU throughput, GPU power, memory capacity and speed, storage, and thermal efficiency — it outpaces the Honor 400 Pro 5G. For users who push their phones hard, the Ace 6 is the clear choice; the Honor's Snapdragon 8 Gen 3 remains a capable chip, but it is simply outclassed here.

The rear camera systems reveal a significant hardware gap. The Honor 400 Pro 5G fields a triple-lens array headlined by a 200 MP main sensor, supplemented by a 50 MP and a 12 MP lens, and crucially offers 3x optical zoom — meaning it can reach distant subjects without any digital quality loss. The OnePlus Ace 6, by contrast, carries a dual-lens setup at 50 MP and 8 MP with no optical zoom at all. For users who regularly shoot telephoto subjects — portraits, wildlife, travel — that absence is a meaningful limitation.

Video recording is where the OnePlus pushes back. The Ace 6 supports both HDR10 and Dolby Vision recording, formats that capture a wider dynamic range and deliver richer, more color-accurate footage on compatible displays. The Honor records in neither standard, which matters for users who edit or watch their videos on premium screens. The Ace 6 also packs two flash LEDs versus the Honor's one, which can improve flash-lit shots. On the selfie side, the Honor reclaims ground with a 50 MP dual front camera against the Ace 6's single 16 MP shooter — a clear advantage for selfie-focused users. Both phones share OIS, phase-detection autofocus, and a comparable manual controls suite.

Overall, the Honor 400 Pro 5G holds the camera edge, driven by its higher-resolution main sensor, versatile triple-lens layout, optical zoom capability, and superior front camera. The OnePlus Ace 6 carves out a niche advantage in video quality standards with HDR10 and Dolby Vision recording support. Still shot photographers and zoom users will strongly prefer the Honor; video-first shooters may find the Ace 6's recording credentials more compelling.

Strip away the one meaningful difference here and these two phones are running virtually identical software feature sets — every privacy control, productivity tool, and customization option listed is shared across both devices. That makes the single standout fact all the more decisive: the OnePlus Ace 6 ships with Android 16, while the Honor 400 Pro 5G launches on Android 15. A newer Android version means access to the latest platform security patches, updated privacy architecture, and any behavioral or performance improvements Google has baked into the release from day one.

Neither phone receives direct OS updates — meaning neither gets updates pushed straight from Google, relying instead on the manufacturer's own update pipeline. This neutralizes any theoretical long-term update advantage, since both are equally dependent on their respective vendors. The shared feature parity across privacy tools, multitasking capabilities like split screen and Picture-in-Picture, and personalization options such as dynamic theming and customizable notifications means day-to-day software experience will feel largely equivalent between the two.

Given the near-total feature parity, the OnePlus Ace 6 holds a narrow but clear OS edge simply by virtue of launching on a more current Android version. For most users the practical difference will be subtle, but starting a generation ahead on the Android release cycle is a meaningful baseline advantage, particularly for security-conscious buyers.

Raw capacity is where the OnePlus Ace 6 makes its boldest statement in this comparison: a 7800 mAh battery against the Honor 400 Pro 5G's already-generous 6000 mAh. That 30% capacity advantage translates directly into more hours between charges — a tangible benefit for heavy users, travelers, or anyone who dislikes hunting for a power outlet mid-day. Paired with the Ace 6's more efficient Snapdragon 8 Elite chip noted in the performance group, the real-world endurance gap could be even wider than the raw numbers suggest.

Wired charging tells a similarly decisive story in the Ace 6's favor, with 120W versus the Honor's 100W — both fast enough to top up in well under an hour, though the Ace 6 edges ahead in speed too. The dynamic reverses on wireless charging: the Honor delivers a commanding 50W wirelessly, dwarfing the Ace 6's 18W. For users who rely on wireless pads as their primary charging method, that gap is significant — 50W wireless is near wired-speed convenience. The Honor also adds reverse wireless charging, allowing it to top up accessories like earbuds or a smartwatch, a feature the Ace 6 lacks entirely.

The verdict here depends on charging habits. For sheer endurance and wired top-up speed, the OnePlus Ace 6 is the stronger choice. But for wireless charging users, the Honor 400 Pro 5G offers a substantially faster and more versatile wireless experience, including reverse charging support. Users who rarely plug in with a cable will find the Honor's wireless ecosystem notably more capable.

Audio hardware is nearly identical between these two phones — both drop the 3.5 mm headphone jack, both feature stereo speakers, and both support aptX HD for high-resolution wireless audio over Bluetooth. For the majority of users, the listening experience from either device will be indistinguishable in daily use.

The one differentiator is the OnePlus Ace 6's additional support for aptX Adaptive. This is a meaningful step up for wireless audio enthusiasts: aptX Adaptive is a more advanced codec that dynamically adjusts bitrate based on connection conditions, delivering lower latency and more resilient audio quality compared to aptX HD alone. In practice, this matters most when using compatible high-end Bluetooth headphones or earbuds, where it can reduce audio lag during video playback and maintain higher fidelity in congested wireless environments.

This category is close, but the OnePlus Ace 6 holds a narrow edge thanks to aptX Adaptive support. For casual listeners the difference is unlikely to register, but for users who own or plan to invest in aptX Adaptive-compatible audio hardware, the Ace 6 offers a noticeably more capable wireless audio pipeline.

Across the vast majority of connectivity specs, these two phones are carbon copies of each other — identical 5G support, Bluetooth 5.4, NFC, dual SIM, USB Type-C, matching cellular download and upload speeds, and shared extras like an infrared sensor and GPS with Galileo. For most users evaluating connectivity, there is genuinely nothing to separate them.

Two quiet differences are worth noting, however. The Honor 400 Pro 5G supports Wi-Fi 6E in addition to Wi-Fi 7, while the OnePlus Ace 6's Wi-Fi stack goes directly from Wi-Fi 5 to Wi-Fi 6 and then Wi-Fi 7, skipping 6E. In practice, since both support Wi-Fi 7 — the more capable standard — this gap has minimal real-world impact for most users. Going the other direction, the OnePlus Ace 6 includes a gyroscope where the Honor does not. A gyroscope enables more accurate motion sensing for gaming (tilt-to-steer controls), augmented reality applications, and image stabilization algorithms — its absence on the Honor is a tangible, if niche, limitation.

This category is essentially a tie with two minor divergences pulling in opposite directions. The Honor's Wi-Fi 6E support is largely superseded by both phones having Wi-Fi 7, while the OnePlus Ace 6 holds a small practical edge with its gyroscope — a sensor that matters specifically for mobile gamers and AR users. Neither difference is significant enough to be a deciding factor for most buyers.

The miscellaneous specs for these two phones are identical across every data point provided: both include a video light, neither features sapphire glass, a curved display, or an e-paper display. There is simply no differentiator to analyze here.

This group is a complete tie. Buyers should weigh decisions for these two devices entirely on the differences surfaced in other specification groups.