Vivo T4x 5G VS Vivo Y31 5G

In terms of form factor, the two phones are very close. The Vivo T4x 5G measures 165.7 × 76.3 × 8.1 mm and weighs 204 g, while the Vivo Y31 5G is marginally larger at 166.1 × 77 × 8.4 mm and weighs 209 g. Neither difference is perceptible in day-to-day handling — a 5 g gap and a 0.3 mm thickness difference fall well within the threshold of what most users can actually feel. Both are non-foldable, conventionally built slabs with no rugged reinforcement, so neither is engineered for drop resistance beyond standard consumer tolerances.

The decisive differentiator in this group is protection rating. The T4x carries an IP64 certification, meaning it is fully dust-tight but only splash-resistant — it can handle rain or accidental water contact, but should not be submerged. The Y31 steps up to IP68, the consumer flagship standard, which certifies it for submersion in fresh water (typically 1.5 m for 30 minutes). In real-world terms, this means the Y31 can survive a drop in a sink or puddle, whereas the T4x cannot make that claim reliably.

The Vivo Y31 5G holds a clear edge in this category. Despite being marginally heavier and slightly thicker, its IP68 rating represents a meaningful, practical upgrade in durability over the T4x's IP64. For users who prioritize peace of mind around water exposure — whether at the beach, poolside, or simply in rainy conditions — the Y31's protection level is a tangible real-world advantage that the near-identical physical dimensions cannot offset.

Both phones share the same panel technology — LCD IPS — and an identical 120Hz refresh rate, meaning scrolling and animations will feel equally fluid on either device. Screen size is also nearly identical at 6.72″ and 6.68″ respectively, so ergonomics and media real estate are a wash. Where things diverge sharply, however, is resolution and pixel density.

The Vivo T4x 5G packs a 1080 × 2408 px panel at 393 ppi, firmly in Full HD+ territory. The Vivo Y31 5G, by contrast, tops out at 720 × 1608 px — an HD+ panel — yielding just 264 ppi. That 129 ppi gap is not subtle: at typical viewing distances, individual pixels on the Y31 can become discernible, particularly in small text, fine UI details, and high-contrast content. For streaming video, the T4x can render more detail from higher-quality sources, while the Y31 will upscale everything above 720p.

The Y31 does counter with one advantage: it features branded damage-resistant glass, offering meaningful scratch and impact protection that the T4x lacks. That said, screen sharpness is a constant, daily-use factor, while glass protection matters most in accident scenarios. On balance, the Vivo T4x 5G holds a clear display advantage — its Full HD+ resolution at 393 ppi delivers a noticeably crisper visual experience that outweighs the Y31's glass durability benefit for most users.

A shared foundation exists here — both chips are built on a 4nm process, run 8 threads with big.LITTLE architecture, and support DDR5 memory and DirectX 12. That said, the Vivo T4x 5G pulls ahead in nearly every meaningful performance dimension. Its MediaTek Dimensity 7300 pairs with 8GB of RAM running at a notably faster 6400 MHz, compared to the Y31's 6GB at 3200 MHz. That doubled memory bandwidth directly translates to snappier multitasking, faster asset loading in games, and less stuttering when switching between heavy apps.

Storage tells a similar story. The T4x ships with 256GB of internal storage — double the Y31's 128GB — a practical advantage for users who store media locally or install many apps. On the GPU side, the T4x's Mali G615 MC2 clocks in at 1047 MHz versus the Adreno 613's 955 MHz on the Y31, giving the T4x a modest edge in graphics-intensive tasks. One footnote in the Y31's favor: it supports 2 external displays versus the T4x's 1, which matters for desktop-mode or productivity use cases, though that is a niche scenario for this device class.

Overall, the Vivo T4x 5G holds a clear and multi-dimensional performance advantage — more RAM, faster memory, and double the storage. For users who care about day-to-day responsiveness and future-proofing their device against heavier workloads, the T4x is the stronger choice in this category by a meaningful margin.

The main camera resolution is identical at 50 MP on both devices, but the hardware setup diverges from there. The Vivo T4x 5G features a dual-lens rear system — a 50 MP primary and a 2 MP secondary — adding versatility for depth sensing or macro shooting that the single-lens Y31 simply cannot replicate. The Y31 counters with a slightly wider f/1.8 aperture on its lone lens, though the T4x matches that on its primary shooter too, so low-light parity is essentially a wash on the main sensor.

The most consequential gap is video capability. The T4x tops out at 4K (2160p) at 30fps, while the Y31 is capped at 1080p at 30fps. For anyone who shoots video — whether for social media, travel, or family moments — that is a significant real-world difference: 4K footage retains far more detail when cropped or downscaled, and future-proofs recordings for higher-resolution screens. The Y31 does offset this slightly with 2 flash LEDs versus the T4x's 1, which can produce more even flash illumination in low-light stills, but that is a narrow use-case advantage. Both phones share the same 8 MP front camera resolution, with the Y31's f/2.0 selfie aperture edging out the T4x's f/2.1 by a negligible margin.

The Vivo T4x 5G is the stronger camera package overall. The combination of a dual-lens rear system and 4K video recording — features the Y31 lacks entirely — gives it a clear and practical advantage for users who want more from their smartphone photography and videography.

This is a rare case of complete parity. Both the Vivo T4x 5G and the Vivo Y31 5G run Android 15 and share an identical feature set across every tracked OS dimension — privacy controls, UI customization, multitasking, and productivity tools included. From split-screen support and Picture-in-Picture to dynamic theming, on-device machine learning, and offline voice recognition, users on either device will have access to exactly the same software experience out of the box.

Notable shared strengths worth highlighting: both offer a solid privacy toolkit — camera and microphone access controls, location permissions, app tracking blocks, and clipboard warnings — which reflects Android 15's matured privacy posture. Both also support multi-user mode, widgets, app offloading, and battery health checks, rounding out a capable and modern feature set for the mid-range segment. Neither device receives direct OS updates, meaning both rely on Vivo's own update pipeline rather than getting patches straight from Google.

This category is a complete tie. With no divergence across any spec in the dataset, the OS experience offers zero basis for preferring one device over the other. Buyers focused purely on software should look to the other specification groups to differentiate these two phones.

Battery is another category where the two devices are in complete lockstep. Both the Vivo T4x 5G and the Vivo Y31 5G carry an identical 6500 mAh cell — a generously sized capacity that places them well above the mid-range norm of 5000 mAh. In practical terms, that extra headroom comfortably supports heavy users through a full day and light-to-moderate users well into a second day without needing to reach for a charger.

Charging parity extends to the wired side as well: both top out at 44W fast charging and both include a charger in the box — a detail worth noting as box-bundled chargers become less common. Neither phone supports wireless charging, which is typical at this price tier. Batteries are non-removable on both, also standard for modern mid-range devices.

This is a complete tie across every battery metric. Neither phone offers any advantage over the other in this category, and the decision between them should rest entirely on the differentiators found in other specification groups.

Audio is yet another category where the Vivo T4x 5G and Vivo Y31 5G are mirror images of each other. Both feature stereo speakers — a welcome inclusion at this price point that makes media consumption, gaming, and speakerphone calls noticeably more immersive than a single mono driver. Neither device includes a 3.5mm headphone jack, so wired audio listeners will need a USB-C adapter or a pair of Bluetooth earbuds on either phone.

On the wireless audio quality front, both phones omit high-resolution Bluetooth codecs entirely — no aptX, no LDAC, no aptX HD or Adaptive. This means Bluetooth audio is limited to standard SBC or AAC transmission, which is adequate for casual listening but will not satisfy audiophiles seeking lossless or near-lossless wireless playback. Neither device includes an FM radio either, a feature that has largely faded from the mid-range segment.

This category is a complete tie with no differentiating factors between the two phones. Audio hardware is identical across every tracked spec, and neither device holds any advantage over the other here.

Wireless connectivity is where the Vivo T4x 5G pulls meaningfully ahead. It supports Wi-Fi 6 (802.11ax) alongside older standards, while the Y31 tops out at Wi-Fi 5 (802.11ac). Wi-Fi 6 delivers faster throughput, lower latency, and better performance in congested environments — a tangible benefit in busy households or offices with many connected devices. The Bluetooth gap is even more striking: the T4x ships with Bluetooth 5.4 versus the Y31's dated 4.2, meaning the T4x offers improved connection stability, faster pairing, and better coexistence with other wireless signals. On cellular speeds, the T4x's upload ceiling of 3270 Mbits/s dwarfs the Y31's 900 Mbits/s — a significant advantage for anyone regularly uploading large files or streaming live video.

The sensor loadout also diverges. The T4x adds a gyroscope and an infrared sensor that the Y31 lacks entirely. The gyroscope enables more accurate motion-based gaming controls and augmented reality applications, while the infrared sensor lets the phone function as a universal remote — a quietly useful convenience feature. The Y31 reclaims one practical advantage though: it includes an external memory card slot, allowing users to expand storage cheaply, whereas the T4x is limited to its built-in 256GB with no expansion path.

The Vivo T4x 5G holds a clear and broad advantage in this category. Superior Wi-Fi, a much newer Bluetooth version, faster cellular upload speeds, and additional sensors collectively outweigh the Y31's expandable storage benefit for most users — though that microSD slot remains a genuine differentiator for those who prioritize flexible, low-cost storage expansion.

The miscellaneous specs for these two devices offer nothing to separate them. Both the Vivo T4x 5G and the Vivo Y31 5G share every tracked attribute in this group — each has a video light, and neither features sapphire glass, a curved display, or an e-paper panel. These are all expected omissions at the mid-range tier, where sapphire glass and curved screens remain premium-segment features.

This is a complete tie with no differentiating factors. Buyers should place no weight on this category when choosing between the two phones.