Realme P3 VS Vivo Y400 5G

In terms of design, the Realme P3 and Vivo Y400 5G are remarkably close across every dimension. Both share an IP68 waterproof rating, meaning each can withstand submersion in fresh water up to 1.5 meters for 30 minutes — a meaningful durability feature at this price tier that gives both phones genuine protection against rain, splashes, and accidental drops in water. Neither adopts a rugged or foldable form factor, placing them squarely in the mainstream slab category.

Where minor differences do exist, they consistently favor the Vivo Y400 5G. It is slightly lighter at 197 g versus 194 g — though a 3-gram gap is imperceptible in daily handling. More practically, the Y400 5G is a hair slimmer at 7.9 mm compared to 8 mm, and its overall footprint is marginally more compact: slightly narrower at 75.3 mm and shorter at 162.3 mm, resulting in a calculated volume of roughly 96.5 cm³ against the Realme P3's 98.8 cm³. In absolute terms these are sub-millimeter distinctions, but they do mean the Y400 5G occupies fractionally less space in hand and pocket.

Realistically, no meaningful design advantage exists for either device. The shared IP68 certification is the headline feature here and neither product trades blows on that front. The dimensional gaps are too small to influence a buying decision on their own. If forced to declare an edge purely on numbers, the Vivo Y400 5G is the marginally more compact and svelte of the two, but in practice the two phones are functionally identical in the hand.

Both phones share an identical display foundation: a 6.67″ OLED/AMOLED panel running at 1080 x 2400 px resolution with a pixel density of 395 ppi and a 120Hz refresh rate. That combination delivers sharp, vibrant visuals with smooth scrolling — a genuinely capable screen setup for this segment. Neither phone uses branded damage-resistant glass, which is a shared omission worth noting for users who prioritize scratch protection.

The differentiators are few but real. The Vivo Y400 5G supports HDR10, meaning compatible streaming content from platforms like Netflix or YouTube will display with a wider dynamic range — brighter highlights, deeper shadows — compared to the Realme P3, which lacks HDR support entirely. Additionally, the Y400 5G features an Always-On Display, a convenience that lets users glance at the time, notifications, or date without waking the screen — a small but consistently appreciated quality-of-life feature that the Realme P3 does not offer.

The Vivo Y400 5G holds a clear edge in this category. The core panel specs are a dead heat, but HDR10 support meaningfully improves the media consumption experience, and Always-On Display adds daily utility. Neither advantage is transformative on its own, but together they represent a tangible step up for users who watch a lot of streaming content or value glanceable information without unlocking their phone.

The storage and RAM headline looks identical — both phones ship with 8GB of RAM and 256GB of internal storage on DDR5 memory. But beneath that surface parity, the chipset choice creates a meaningful performance gap. The Realme P3 runs on the Snapdragon 6 Gen 4 paired with an Adreno 810 GPU, while the Vivo Y400 5G uses the Snapdragon 4 Gen 2 with an Adreno 613. The ″6 series″ versus ″4 series″ designation within Qualcomm's lineup directly signals a higher performance tier for the Realme P3, and the GPU model numbers reinforce this — the Adreno 810 is a substantially more capable graphics processor than the Adreno 613.

A few individual metrics cut the other way for the Y400 5G. Its GPU clock speed is higher at 955 MHz versus 800 MHz, and its RAM operates faster at 3200 MHz compared to 2750 MHz. These are real advantages for memory bandwidth and certain GPU-bound workloads. However, the Y400 5G's notably lower TDP of 4W versus the Realme P3's 7W tells an important story: the Realme P3 draws significantly more power under load, which is the direct trade-off for its higher sustained performance ceiling. The Y400 5G is the more thermally conservative chip, which may translate to cooler sustained operation but at a performance cost.

The Realme P3 holds the performance edge in this category. The higher-tier chipset and superior GPU architecture give it a tangible advantage for demanding tasks — gaming, video rendering, and multitasking under load. The Y400 5G's faster RAM speed and lower GPU clock speed offer some nuance, but they are not enough to close the gap defined by the chipset hierarchy. Users who prioritize raw processing power should lean toward the Realme P3; those who prefer a cooler, more power-efficient chip for everyday tasks may find the Y400 5G's balance appealing.

The rear camera systems start from the same place — a 50 MP + 2 MP dual-lens setup on both phones — but diverge in two significant ways. The Realme P3 includes optical image stabilization (OIS), which physically compensates for hand movement during shots and video recording, reducing blur in low-light photography and producing noticeably steadier footage. The Vivo Y400 5G lacks OIS entirely. More strikingly, the Realme P3 records video at up to 4K (2160p) at 30fps, while the Y400 5G tops out at 1080p at 30fps — a full two resolution tiers lower. For anyone who shoots video, this is a concrete and visible difference in output quality.

The selfie camera flips the dynamic. The Vivo Y400 5G sports a 32 MP front camera against the Realme P3's 16 MP — double the resolution, which means finer detail in selfies and more cropping flexibility. The aperture difference (f/2.4 vs f/2.5) is negligible in practice. Every other camera feature — phase-detection autofocus, continuous autofocus during video, slow-motion, HDR mode, panorama, timelapse, and the full manual controls suite — is identical across both devices.

This category produces a split verdict. For rear camera capability, the Realme P3 has a clear advantage thanks to OIS and 4K video recording — two features that meaningfully elevate photo and video quality in real use. For selfie performance, the Vivo Y400 5G leads with its higher-resolution front camera. The deciding factor comes down to use case: video creators and low-light photographers should favor the Realme P3, while selfie-focused users will find the Y400 5G more appealing.

Rarely does a spec group produce a result this definitive: the Realme P3 and Vivo Y400 5G are running identical software feature sets. Both launch on Android 15, and every single capability in this dataset — from privacy controls like location and camera/microphone permissions, to productivity features like split-screen, Picture-in-Picture, and widgets, to quality-of-life tools like dark mode, dynamic theming, battery health check, and offline voice recognition — is present on both devices without exception.

A few shared absences are worth flagging. Neither phone receives direct OS updates, meaning software patches and version upgrades are mediated through the respective manufacturer rather than pushed straight from Google. Neither supports cross-site tracking blocks or Wi-Fi password sharing, and neither offers focus modes. These omissions apply equally to both, so they represent no competitive difference — but users who prioritize a clean, update-assured software experience should factor in the lack of direct OS update support when considering either device.

This category is an absolute tie. There is no feature present on one phone that is absent on the other. The software experience, as defined by this data, is functionally identical — and the decision between these two devices will have to rest entirely on the hardware differences covered in other categories.

Battery capacity is a dead heat: both phones pack a 6000 mAh cell, which sits at the generous end of the mid-range spectrum and should comfortably support a full day of heavy use or two days of moderate use for most people. Neither offers wireless charging or a removable battery, so the playing field is level on those fronts.

Where the two diverge — and diverge sharply — is charging speed. The Vivo Y400 5G supports 90W fast charging, exactly double the 45W offered by the Realme P3. With a 6000 mAh battery, that gap is practically significant: a 90W charger can realistically replenish the cell in roughly half the time a 45W charger would take. For users who rely on quick top-ups between tasks or forget to charge overnight, that difference translates directly into less time tethered to a wall.

The Vivo Y400 5G wins this category on the strength of its charging speed alone. Battery longevity is identical, but the ability to charge twice as fast is a meaningful real-world advantage — particularly given the large 6000 mAh capacity that would otherwise take a while to refill at 45W. Users who prioritize fast turnaround on charging should consider this a notable point in the Y400 5G's favor.

The audio specifications for these two phones are identical in every respect. Both the Realme P3 and Vivo Y400 5G feature stereo speakers — a genuine asset for media consumption, gaming, and hands-free calls, producing a wider soundstage than a single-speaker setup. Neither device includes a 3.5mm headphone jack, which means wired audio requires a USB-C adapter, a trade-off that has become common across the mid-range segment.

On the wireless audio front, neither phone supports any high-resolution Bluetooth codec — no aptX, aptX HD, aptX Adaptive, LDAC, or aptX Lossless. Users who listen through premium wireless headphones capable of high-fidelity Bluetooth transmission will be limited to standard codec performance on both devices. There is no radio support on either phone either.

This is a complete tie. Every audio capability and limitation is shared equally between the two phones. Audio quality and features will not be a differentiating factor in choosing between them, and buyers with strong wireless audio requirements should note that neither device caters to high-resolution Bluetooth listening.

Across the core connectivity checklist — 5G, dual SIM, NFC, USB-C, GPS with Galileo support, fingerprint scanner, and the full standard sensor suite — these two phones are evenly matched. But the Realme P3 pulls ahead in several areas that compound into a meaningful overall advantage. Its Wi-Fi implementation includes Wi-Fi 6 (802.11ax), whereas the Vivo Y400 5G tops out at Wi-Fi 5. Wi-Fi 6 delivers higher throughput, lower latency, and better performance in congested environments with many connected devices — a tangible benefit in busy homes or offices. Bluetooth also favors the Realme P3 at version 5.2 versus 5.0 on the Y400 5G, offering modestly improved connection stability and efficiency.

The cellular data speeds reinforce this gap. The Realme P3 supports download speeds up to 2900 Mbits/s and upload speeds up to 1600 Mbits/s, compared to 2500 Mbits/s down and 900 Mbits/s up on the Y400 5G. The upload difference is particularly striking — the Realme P3's ceiling is nearly double, which matters for users who frequently send large files, video call, or back up data over mobile networks. Additionally, the Realme P3 includes an infrared (IR) sensor, which lets it function as a universal remote for TVs and home appliances — a convenience feature entirely absent on the Y400 5G.

The Realme P3 wins this category clearly. Wi-Fi 6, a newer Bluetooth version, significantly higher upload speeds, and an IR blaster all tip the scales in its favor. None of these individually is a dealbreaker, but together they represent a noticeably more capable and future-ready connectivity package than what the Vivo Y400 5G offers.

This is a slim category with only one meaningful differentiator. Both phones share a video light — useful for illuminating subjects during video recording — and neither uses sapphire glass or an e-paper display. The single distinguishing feature is that the Vivo Y400 5G has a curved display, while the Realme P3 uses a flat panel.

A curved screen edges the glass over the sides of the frame, creating a more premium, immersive aesthetic and a sleeker in-hand feel. The trade-off is practical: curved displays are generally more susceptible to edge cracks on impact and can be harder to protect with screen protectors. Flat displays, by contrast, are easier to case and protect, and avoid the minor distortion that can appear at the curved periphery. Whether the curve is an asset or a liability comes down squarely to personal preference.

Strictly on the basis of this data, the Vivo Y400 5G has a marginal aesthetic edge with its curved display — a feature typically associated with higher-end devices. However, users who prioritize repairability and case compatibility may view the Realme P3's flat screen as the more pragmatic choice. Neither outcome represents a strong functional advantage, making this category a near-tie decided largely by individual taste.