Honor 400 5G (China) VS Realme P3

Both the Honor 400 5G and the Realme P3 share a solid foundation in water resistance, carrying an IP68 rating that means full submersion protection — a genuinely useful feature for everyday durability. Neither adopts a rugged build or a foldable form factor, so both target the mainstream slab smartphone market.

Where the two diverge meaningfully is in overall footprint. The Realme P3 is noticeably taller at 163.2 mm versus 156.3 mm, and slightly wider at 75.7 mm versus 74.7 mm. Combined with its marginally greater thickness of 8 mm versus 7.8 mm, this adds up to a significantly larger total volume — 98.83 cm³ compared to 91.07 cm³ for the Honor. In practical terms, the Realme P3 will feel larger in the hand and pocket, which could hint at a bigger display or battery inside, but purely from a handling standpoint the Honor is the more compact device.

Weight is essentially a tie: 196 g for the Honor versus 194 g for the Realme — a 2 g difference no user will perceive. On design overall, the Honor 400 5G holds a clear edge in compactness and ergonomics, delivering the same IP68 protection in a meaningfully smaller and slightly slimmer shell, which matters for one-handed use and long-term comfort.

Both phones use OLED/AMOLED panels with a 120Hz refresh rate, meaning smooth scrolling and vibrant, high-contrast visuals are guaranteed on either device. The Realme P3 offers a slightly larger canvas at 6.67″ versus 6.55″ on the Honor 400 5G, which some users will prefer for media consumption — but screen size alone tells only part of the story.

The more consequential difference is sharpness. The Honor's 1264 x 2736 px resolution translates to 460 ppi, while the Realme's 1080 x 2400 px panel lands at just 395 ppi. That 65 ppi gap is perceptible in daily use — text renders with noticeably crisper edges and fine detail in photos looks more defined on the Honor's screen. The Honor also gains a meaningful quality-of-life advantage with its Always-On Display support, allowing time, notifications, and widgets to remain visible without fully waking the screen — a feature entirely absent on the Realme P3.

Rounding out the Honor's display advantages, it ships with branded damage-resistant glass — a real-world durability benefit the Realme P3 lacks. On HDR standards, neither phone supports HDR10, HDR10+, or Dolby Vision, so that dimension is a non-factor. Taken together, the Honor 400 5G holds a clear display advantage: its sharper panel, Always-On Display, and protective glass make it the stronger choice for users who prioritize screen quality and everyday practicality.

The chipset gap here is real and consequential. The Honor 400 5G runs on the Snapdragon 7 Gen 4 while the Realme P3 uses the Snapdragon 6 Gen 4 — one tier apart within Qualcomm's lineup, and the specs back that up across every meaningful dimension. The Honor's peak CPU core clocks at 2.8 GHz versus 2.3 GHz on the Realme, and its GPU runs at 1000 MHz compared to 800 MHz — a 25% clock speed advantage that will show up in demanding games and GPU-accelerated tasks.

Perhaps the starkest single number is memory bandwidth: the Honor delivers 33.6 GB/s against the Realme's 12 GB/s — nearly three times the throughput. Combined with significantly faster RAM at 4200 MHz versus 2750 MHz, the Honor can feed its processor data at a rate the Realme simply cannot match. In practice, this means snappier app launches, smoother multitasking, and better sustained performance under load. The Honor also doubles down on raw capacity with 16 GB of RAM and 512 GB of storage, compared to 8 GB / 256 GB on the Realme — a meaningful difference for heavy multitaskers and users with large media libraries.

Both chips are manufactured on a 4 nm process and share the same foundational feature set — DDR5 memory, big.LITTLE architecture, DirectX 12, and TrustZone security — so efficiency and compatibility are comparable. The Realme's slightly higher 7W TDP versus 6W on the Honor is a minor curiosity, suggesting the Honor may actually run a touch cooler under sustained load. Overall, the Honor 400 5G has a commanding performance advantage in this group, outpacing the Realme P3 on CPU speed, GPU power, RAM capacity, and memory bandwidth by margins that will be felt in real everyday use.

The headline difference is impossible to ignore: the Honor 400 5G's primary shooter clocks in at a staggering 200 MP, paired with a 12 MP secondary lens, while the Realme P3 offers a more conventional 50 MP + 2 MP setup. That 200 MP sensor enables extreme detail capture and flexible cropping — useful for picking out fine textures or digitally zooming into a scene without losing resolution — while the Realme's 2 MP secondary lens is largely a depth-assist unit with limited standalone utility.

The Realme does push back in one area: its main lens aperture of f/1.8 is wider than anything on the Honor's rear system, meaning it gathers more light per shot — an advantage in low-light scenes. The Honor's front camera, however, counters strongly with 50 MP at f/2.0 versus the Realme's 16 MP at f/2.4. That combination gives the Honor sharper selfies and better low-light performance up front simultaneously. Both phones include OIS on the main camera, phase-detection autofocus, continuous autofocus during video, slow-motion recording, and a full suite of manual controls — so the shooting experience and feature parity are otherwise well matched.

On balance, the Honor 400 5G holds a clear camera advantage. The Realme's wider main aperture is a genuine plus in low light, but the Honor's dominant megapixel count on both rear and front cameras, combined with a meaningfully more capable ultrawide-equivalent secondary sensor, makes it the stronger imaging package overall for users who prioritize resolution and versatility.

This is a rare case of complete parity. Both the Honor 400 5G and the Realme P3 run Android 15 and share an identical feature set across every single OS specification provided — from privacy controls like location and camera/microphone permissions, to productivity features like split-screen, Picture-in-Picture, and widgets, to quality-of-life additions like dark mode, dynamic theming, and on-device machine learning.

Notably, neither phone receives direct OS updates — meaning both rely on manufacturer-mediated update rollouts rather than receiving Android patches straight from Google. This is a shared limitation worth keeping in mind for users who prioritize long-term software support. On the privacy front, both offer solid baseline controls including app tracking blocking and clipboard warnings, though neither supports cross-site tracking protection or Mail Privacy Protection.

There is no differentiator to call out here: the OS comparison is a complete tie. A buyer's software experience will be effectively identical on either device based strictly on the data provided, and this category should carry no weight in a purchasing decision between the two.

Battery capacity is where the Honor 400 5G makes one of its most striking statements. Its 7200 mAh cell is exceptionally large by current smartphone standards — a full 1200 mAh more than the Realme P3's already-respectable 6000 mAh. That 20% capacity advantage translates directly into real-world endurance: users who typically reach end-of-day on the Realme could comfortably stretch the Honor into a second day under similar usage patterns.

Charging speed tells a different side of the story. The Honor tops up at 80W versus 45W on the Realme — meaning that despite carrying a larger battery, the Honor can replenish it significantly faster. This combination of high capacity and fast charging is particularly compelling: you get extended runtime without sacrificing the ability to top up quickly when needed. Neither phone supports wireless charging, and both have sealed, non-removable batteries — so those dimensions are evenly matched.

The verdict here is clear-cut: the Honor 400 5G wins the battery category decisively, offering both a larger reservoir and faster replenishment. For heavy users, frequent travelers, or anyone who finds themselves hunting for a charger mid-afternoon, the Honor's battery setup is a meaningful practical advantage over the Realme P3.

The shared ground between these two is straightforward: both drop the 3.5mm headphone jack, both deliver stereo speakers for spatial audio output, and neither includes a radio. For wired headphone users, an adapter will be required on either device — that trade-off is equal. Where things diverge is in wireless audio codec support, and the gap is notable.

The Honor 400 5G supports aptX HD and aptX Adaptive, while the Realme P3 supports none of the advanced Bluetooth audio codecs listed. This matters for users with compatible wireless headphones: aptX HD enables higher-resolution audio streaming over Bluetooth, and aptX Adaptive goes further — dynamically adjusting bitrate for lower latency and more stable quality, making it particularly valuable for both music listening and gaming. The Realme, lacking these codecs, will fall back to more basic Bluetooth audio transmission when paired with premium headphones, which can result in audibly compressed sound and higher latency.

The Honor 400 5G has a clear audio advantage for wireless headphone users. The stereo speaker setup is equivalent on both phones, but the Honor's aptX HD and aptX Adaptive support meaningfully elevates the Bluetooth audio experience — a real differentiator for anyone who invests in quality wireless audio gear.

Connectivity parity is the dominant story here. Both the Honor 400 5G and the Realme P3 cover the same essential bases: 5G, Wi-Fi 6, dual SIM, USB-C, NFC, fingerprint scanner, GPS with Galileo support, gyroscope, accelerometer, compass, and even an infrared sensor — a feature increasingly rare at this segment that lets either phone double as a universal remote. Neither offers expandable storage, a barometer, or satellite SOS.

The only measurable difference is Bluetooth: the Honor carries Bluetooth 5.4 against the Realme's 5.2. In practice, 5.4 brings improvements in connection stability, reduced interference in crowded wireless environments, and better support for the latest low-energy audio profiles. It is a modest but genuine step forward, particularly relevant for users who regularly pair wireless earbuds or speakers in busy public spaces.

Overall this category is nearly a tie, with a slight edge to the Honor 400 5G solely on the strength of its newer Bluetooth version. For most users the real-world difference will be subtle, but the Honor's connectivity stack is marginally more future-proof — everything else is functionally identical between the two devices.

The miscellaneous spec group offers nothing to separate these two devices. Both the Honor 400 5G and the Realme P3 include a video light, and neither features a sapphire glass display, curved display, or e-paper display — the full set of data points here is identical.

This is a complete tie. The provided specifications in this category carry no decision-making weight between the two phones, and buyers should look to other spec groups to inform their choice.