Honor 400 5G VS Honor X9d 5G

The most meaningful difference in this group comes down to water protection. The Honor 400 5G carries an IP65 rating, meaning it can withstand low-pressure water jets — sufficient for rain or accidental splashes, but not submersion. The Honor X9d 5G, by contrast, is rated IP68, which certifies it against sustained immersion in water. In practical terms, this distinction matters significantly: the X9d can survive a drop in a sink or pool, while the 400 5G cannot. For users who frequently use their phone near water or in demanding outdoor conditions, this is a tangible real-world advantage for the X9d.

The trade-off is physical footprint. The X9d is noticeably larger and heavier — 193 g versus 184 g, 7.8 mm thick versus 7.3 mm, and with a taller, wider frame. Its overall volume is roughly 13% greater than the 400 5G. The 400 5G is the more compact and lighter device, which translates to a more comfortable single-handed grip and a less bulky presence in a pocket. Neither phone has a rugged build or foldable form factor, so both are conventional, glass-style slabs.

Overall, the Honor X9d 5G holds a clear edge in durability due to its superior IP68 waterproofing, which is a meaningful upgrade over IP65. The Honor 400 5G wins on ergonomics and portability with its slimmer, lighter design. Users who prioritize resilience should lean toward the X9d; those who value a more pocketable, lighter handset will prefer the 400 5G.

Both phones share the same panel technology — OLED/AMOLED — and an identical 120Hz refresh rate, so motion smoothness and color quality are on an even footing at a baseline level. Where they diverge sharply is brightness. The Honor 400 5G delivers a remarkable 5000 nits of typical brightness, compared to just 800 nits on the X9d 5G. This is not a marginal gap — it is a fundamental difference in outdoor usability. At 5000 nits, the 400 5G remains clearly legible even in direct sunlight, while the X9d's 800 nits, though adequate indoors, will struggle in bright outdoor environments. For users who frequently use their phone outside, this alone is a decisive factor.

Sharpness also favors the 400 5G. Its 460 ppi pixel density edges out the X9d's 427 ppi, a difference that is subtly visible when reading fine text or viewing detailed images up close. The X9d compensates with a larger 6.79″ screen — better for media consumption and multitasking — but the 400 5G's smaller 6.55″ panel is denser and punchier. On the durability side, the X9d offers branded damage-resistant glass, which the 400 5G lacks, making the X9d's screen more resistant to everyday scratches and drops.

On balance, the Honor 400 5G holds a clear display advantage, driven primarily by its extraordinary brightness and higher pixel density. The X9d counters with a bigger screen and scratch-resistant glass, which are real benefits — but for display performance, the 400 5G is the stronger panel.

At the heart of this comparison is a chipset tier gap. The Honor 400 5G runs on the Snapdragon 7 Gen 3, a higher-tier processor than the Snapdragon 6 Gen 4 found in the X9d 5G. This translates directly into CPU speed: the 400 5G's peak core clocks at 2.63 GHz versus the X9d's 2.3 GHz, and its mid-cores are also faster. In everyday use, this means the 400 5G handles demanding apps, heavy multitasking, and sustained workloads with more headroom.

The starkest gap, however, is memory bandwidth — 25.6 GB/s on the 400 5G versus just 12 GB/s on the X9d. This is more than double, and it matters in practice: higher bandwidth means the CPU and GPU can move data faster, which benefits gaming frame consistency, image processing, and anything that stresses system memory. The 400 5G's RAM also runs at a quicker 3200 MHz compared to the X9d's 2750 MHz, reinforcing this advantage. Interestingly, the X9d carries a marginally higher 7W TDP versus the 400 5G's 6W, suggesting the 400 5G achieves its superior performance at lower power draw — a meaningful efficiency edge. Both phones share the same 4nm process, 512GB storage, and 12GB RAM configuration, so the differences are purely in execution throughput.

The Honor 400 5G has a clear and convincing performance advantage in this group. Its higher-tier chipset, faster CPU cores, superior memory bandwidth, and better RAM speed all point in the same direction — it is the faster, more efficient device for performance-intensive tasks.

The camera systems diverge most dramatically in resolution. The Honor 400 5G fields a 200 MP primary sensor paired with a 12 MP secondary lens, while the Honor X9d 5G offers a 108 MP main sensor alongside a much lower-resolution 5 MP secondary. A 200 MP sensor captures significantly more detail, giving the 400 5G a notable advantage in scenarios like cropping into shots or printing large images — and the gap between the secondary lenses is equally wide, with the 400 5G's 12 MP unit far outpacing the X9d's 5 MP companion for auxiliary shots.

Selfie capability tells a similar story. The 400 5G's front camera comes in at 50 MP, compared to just 16 MP on the X9d — a substantial difference for users who prioritize portrait or video selfies. The 400 5G also benefits from a wider front aperture of f/2.0 versus the X9d's f/2.5, meaning it lets in more light and should perform better in low-light selfie conditions. Both phones otherwise share an identical feature set: OIS, phase-detection autofocus, continuous autofocus during video, slow-motion recording, HDR mode, and a full suite of manual controls.

The Honor 400 5G has a commanding advantage in this group. Higher resolution across every lens — main, secondary, and front — combined with a wider selfie aperture makes it the considerably stronger camera package of the two.

This is a rare case of a perfect tie. Both the Honor 400 5G and the Honor X9d 5G run Android 15 and share an identical feature set across every tracked software specification — from privacy controls like location and camera/microphone permissions, to usability features like split-screen, Picture-in-Picture, dynamic theming, and dark mode. There is not a single differentiating data point between them in this group.

Notably, both phones lack a few features worth flagging — neither receives direct OS updates, meaning software upgrades are routed through Honor's own update pipeline rather than straight from Google. Neither supports cross-site tracking blocking or Wi-Fi password sharing, and both omit focus modes. These are shared limitations, however, and do not favor one device over the other.

For software, the verdict is a complete draw. Choosing between these two phones on the basis of their operating system experience is impossible — users will get the exact same Android 15 feature set on either device.

Battery capacity is where the Honor X9d 5G asserts its most decisive advantage across the entire comparison. Its 8300 mAh cell dwarfs the 400 5G's 5300 mAh — a difference of 3000 mAh, or roughly 57% more capacity. In real-world terms, this translates directly to significantly longer time between charges: where the 400 5G might comfortably last a full day under moderate use, the X9d has the reserves to push well into a second day for many users. For heavy users, travellers, or anyone frequently away from a charger, this gap is practically meaningful.

The one area where neither phone pulls ahead is charging speed — both support 66W fast charging and both include a charger in the box. However, the larger battery in the X9d means it will take longer to charge from empty to full at the same wattage, which is a minor trade-off for the extra endurance it delivers. Neither device supports wireless charging, so that is a shared limitation.

The Honor X9d 5G wins this group outright. Its exceptionally large battery is a standout feature that directly addresses the most common pain point of smartphone ownership — running out of charge. Users who prioritize longevity over everything else will find the X9d's battery a compelling reason to choose it.

Wired audio is off the table for both phones — neither includes a 3.5mm headphone jack, so Bluetooth codec support becomes the more relevant differentiator for headphone users. Both devices share aptX HD support, which enables high-resolution wireless audio at up to 24-bit quality with compatible headphones. Where they part ways is breadth of codec coverage: the Honor X9d 5G additionally supports aptX and aptX Adaptive, while the 400 5G does not.

aptX Adaptive is the most significant of these extras. It is a next-generation codec that dynamically adjusts bitrate in real time to balance audio quality and latency, making it particularly valuable for gaming and video as well as music. Having aptX base support also means the X9d is compatible with a wider range of older Bluetooth headphones and speakers that may not support HD variants. The 400 5G's aptX HD alone covers high-quality audio with compatible modern headphones, but its narrower codec stack limits flexibility across different devices.

Speaker output is identical on paper — both offer stereo speakers with no radio. On balance, the Honor X9d 5G has a modest but genuine edge in audio, driven by its broader Bluetooth codec support, particularly aptX Adaptive, which future-proofs wireless audio compatibility in a way the 400 5G cannot match.

Across the bulk of this group, the two phones are remarkably well-matched — both support 5G, dual SIM, Wi-Fi 6, NFC, USB Type-C, and an identical sensor suite including GPS, gyroscope, compass, accelerometer, and infrared. For most users, day-to-day connectivity will feel functionally identical. The differences that do exist, however, are worth unpacking carefully.

On cellular speeds, the picture is split. The Honor 400 5G leads on download throughput at 5000 Mbits/s versus the X9d's 2900 Mbits/s — an advantage for streaming or pulling large files. But the Honor X9d 5G turns the tables on upload, rated at 1600 Mbits/s compared to just 160 Mbits/s on the 400 5G — a tenfold difference. This makes the X9d significantly more capable for upload-heavy tasks like video calls, cloud backups, or sharing large files on the go. The 400 5G also carries the newer Bluetooth 5.4 versus the X9d's 5.2, offering marginally better connection stability and efficiency with compatible accessories.

This group ends without a clean overall winner. The Honor 400 5G pulls ahead on download speeds and Bluetooth version, while the Honor X9d 5G holds a substantial edge in upload throughput. The better choice here depends on usage: downloaders and streamers lean toward the 400 5G, while content creators and heavy uploaders will find the X9d's upload ceiling far more accommodating.

The miscellaneous category offers no differentiation between these two devices whatsoever. The Honor 400 5G and Honor X9d 5G share every tracked attribute here identically — both include a video light, and neither features a sapphire glass display, curved display, or e-paper display.

This is a complete and unambiguous tie. There is nothing in this group that gives either phone an advantage over the other, and no data point here should factor into a purchasing decision between the two.