The vivo Y400 lands in the busy mid-range segment as a phone that leans hard into durability and battery endurance rather than chasing raw benchmark numbers. Announced on August 4, 2025 and released a few days later on August 7, it pairs a 6.67-inch 120Hz AMOLED panel with a sizeable 6000 mAh battery, fast 90W charging, and an IP68/IP69 rating backed by MIL-STD-810H compliance — an unusually rugged spec sheet at its ₹21,999 launch price in India.
Powered by the Qualcomm Snapdragon 4 Gen 2 and running Android 15 with Funtouch 15, the Y400 is positioned for buyers who want a phone that survives daily abuse, lasts well past a single day, and still feels modern thanks to a bright OLED screen and AI features like Circle to Search. This guide breaks down where the Y400 makes sense, where it compromises, and who should put it on a shortlist.
Full Specifications
Network
| Technology: | GSM / HSPA / LTE / 5G |
| 2G bands: | GSM 850 / 900 / 1800 / 1900 |
| 3G bands: | HSDPA 800 / 850 / 900 / 2100 |
| 4G bands: | 1, 3, 4, 5, 8, 18, 19, 26, 28, 38, 40, 41, 42, 48 |
| 5G bands: | 1, 3, 5, 8, 28, 40, 77, 78 SA/NSA |
| Speed: | HSPA, LTE, 5G |
Launch
| Announced: | 2025, August 04 |
| Status: | Available. Released 2025, August 07 |
Body
| Dimensions: | 162.3 x 75.3 x 7.9 mm (6.39 x 2.96 x 0.31 in) |
| Weight: | 197 g (6.95 oz) |
| Build: | Glass front, plastic back, plastic frame |
| SIM: | Nano-SIM + Nano-SIM |
| IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 2m for 30 min) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions |
Display
| Type: | AMOLED, 120Hz, 1200 nits (HBM), 1800 nits (peak) |
| Size: | 6.67 inches, 107.4 cm2 (~87.9% screen-to-body ratio) |
| Resolution: | 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) |
Platform
| OS: | Android 15, Funtouch 15 |
| Chipset: | Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm) |
| CPU: | Octa-core (2×2.2 GHz Cortex-A78 & 6×1.95 GHz Cortex-A55) |
| GPU: | Adreno 613 |
Memory
| Card slot: | Unspecified |
| Internal: | 128GB 8GB RAM, 256GB 8GB RAM |
| UFS 3.1 |
Main Camera
| Dual: | 50 MP, f/1.8, (wide), 1/2.96″, PDAF 2 MP, f/2.4, (depth) |
| Features: | Ring-LED flash, panorama, HDR |
| Video: | 1080p@30fps |
Selfie camera
| Single: | 32 MP, f/2.5, (wide) |
| Video: | 1080p@30fps |
Sound
| Loudspeaker: | Yes, with stereo speakers |
| 3.5mm jack: | No |
| 24-bit/192kHz Hi-Res audio |
Comms
| WLAN: | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| Bluetooth: | 5.0, A2DP, LE |
| Positioning: | GPS, GLONASS, GALILEO, BDS, QZSS |
| NFC: | No |
| Radio: | No |
| USB: | USB Type-C 2.0, OTG |
Features
| Sensors: | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Circle to Search |
Battery
| Type: | Li-Ion 6000 mAh |
| Charging: | 90W wired, 50% in 20 min Reverse wired Bypass Charging |
Misc
| Colors: | Glam White, Olive Green |
| SAR: | 0.99 W/kg (head) 0.80 W/kg (body) |
| Price: | ₹ 21,999 |
Price and Availability
The vivo Y400 offers a compelling combination of features and performance. While the base price is around ₹21,999, the actual cost may vary depending on your location and retailer. Below, you’ll find the approximate price of the vivo Y400 converted into various currencies. Please note that these are estimates based on recent exchange rates as of June 29, 2026 and may not reflect the exact price you’ll find at a retailer.
- United States: $233
- Japan: ¥37,702
- United Kingdom: £177
- Australia: A$338
- Canada: C$331
- Taiwan: NT$7,422
- Denmark: kr1.527
- Saudi Arabia: ﷼873
- South Korea: ₩357,759
- Germany: €205
- Brazil: R$1.206
- Vietnam: ₫6.099.757
- Kenya: KSh 30,181
- India: ₹21,999
- Indonesia: Rp 4.163.640
- Nigeria: ₦321,166
- Pakistan: ₨64,807
- Philippines: ₱14,266
- Bangladesh: ৳২৮,৬৭০
Value: What ₹21,999 Actually Buys
At its launch price, the Y400 competes in one of the most contested price bands on the market. Rather than spreading the budget thinly, vivo concentrates it on three headline features: a large 6000 mAh battery, 90W wired charging, and a genuine IP68/IP69 plus MIL-STD-810H durability claim. That combination is rare under ₹22,000, where most rivals offer either fast charging or strong water resistance, seldom both. The trade-off is a mid-tier chipset and a conservative camera setup, so the value case rests on how much you weigh longevity and toughness over peak processing power.
Design and Build: Rugged Without the Bulk
The Y400 measures 162.3 x 75.3 x 7.9 mm and weighs 197 g, which is reasonable given the 6000 mAh cell inside. The build uses a glass front with a plastic back and plastic frame — typical for the segment — but the standout is the IP68/IP69 rating, meaning it resists dust, immersion up to 2 m for 30 minutes, and even high-pressure water jets. MIL-STD-810H compliance adds reassurance for drops and environmental stress, though vivo notes this does not guarantee ruggedness in extreme conditions. Two colorways, Glam White and Olive Green, keep the look understated.
Display: A Bright, Smooth AMOLED
The 6.67-inch AMOLED panel is one of the Y400’s strongest assets. It runs at a 120Hz refresh rate for fluid scrolling and reaches up to 1200 nits in high-brightness mode and a quoted 1800 nits peak, making it readable outdoors. With a 1080 x 2400 resolution (around 395 ppi) and a 20:9 aspect ratio, content looks sharp, and the roughly 87.9% screen-to-body ratio keeps bezels modest. An under-display optical fingerprint sensor rounds out the front, a feature still not guaranteed at this price.
Performance: Snapdragon 4 Gen 2 for the Everyday
The Qualcomm Snapdragon 4 Gen 2 is built on a 4 nm process with an octa-core CPU (2×2.2 GHz Cortex-A78 and 6×1.95 GHz Cortex-A55) and an Adreno 613 GPU. This is an efficiency-focused platform aimed at smooth everyday use — messaging, browsing, streaming, and casual gaming — rather than demanding titles at high settings. Paired with 8GB of RAM and UFS 3.1 storage in 128GB or 256GB configurations, the Y400 should feel responsive day to day, but buyers chasing heavy gaming performance may want to look at phones with a higher chipset tier.
Camera: Practical Rather Than Ambitious
Photography is the area where the Y400 keeps things simple. The rear setup is a dual system: a 50 MP f/1.8 main sensor (1/2.96″, with PDAF) joined by a 2 MP f/2.4 depth unit, supported by a ring-LED flash, panorama, and HDR. Up front sits a 32 MP f/2.5 selfie camera. Both front and rear cap video at 1080p@30fps. The 50 MP main camera should deliver pleasing daylight shots, but the lack of an ultrawide or dedicated telephoto and the absence of 4K recording mark this as a practical, not flagship-grade, camera phone.
Battery and Charging: The Headline Endurance
The 6000 mAh Li-Ion battery is the centerpiece of the Y400’s pitch. Combined with the efficient 4 nm Snapdragon 4 Gen 2, it should comfortably push past a full day for most users and stretch to two for lighter ones. Charging is handled by a 90W wired system that vivo says reaches 50% in about 20 minutes, and the phone also supports reverse wired charging and bypass charging to reduce heat during gaming. For buyers who prioritize uptime, this is the Y400’s defining strength.
Software and Connectivity
The Y400 ships with Android 15 layered with Funtouch 15, and includes AI-assisted tools such as Circle to Search. Connectivity covers 5G (SA/NSA) across a broad set of bands, dual-band Wi-Fi 5 (802.11ac), Bluetooth 5.0, and a full GNSS suite (GPS, GLONASS, Galileo, BDS, QZSS). Note the omissions: there is no NFC, no FM radio, no 3.5mm headphone jack, and USB is the older Type-C 2.0 standard. Stereo speakers with 24-bit/192kHz Hi-Res audio support help offset the missing jack for media playback.
Who Should Buy the vivo Y400
The Y400 suits buyers who want maximum battery life, fast top-ups, and serious water and dust resistance without stepping up to flagship pricing. It is a strong fit for outdoor users, students, and anyone who values reliability over benchmark bragging rights. Mobile gamers and photography enthusiasts who need an ultrawide lens, 4K video, or NFC-based payments should weigh alternatives carefully, as those are the clearest gaps in the package.
Conclusion
The vivo Y400 is a focused mid-ranger that knows its priorities: endurance, fast charging, a bright 120Hz AMOLED, and rugged IP68/IP69 protection at an accessible price. Its Snapdragon 4 Gen 2 and basic dual camera keep it grounded rather than groundbreaking, and the missing NFC and headphone jack are worth noting. If your priorities are all-day-plus battery, durability, and a quality screen over peak gaming or versatile cameras, the Y400 is an easy recommendation in its class — just confirm current pricing and availability, as both can change after launch.
References
- vivo India – Y400 5G Specifications – Primary manufacturer specification sheet for the vivo Y400 5G, including display, chipset, memory, battery, cameras, network bands, dimensions, sensors, SAR, and in-box contents.
- vivo India – Y400 5G Product Page – Official product overview for confirming marketed features such as 90W FlashCharge, 6000 mAh battery, 120 Hz AMOLED display, IP68/IP69 rating, camera features, colors, and manufacturer disclaimers.
- Qualcomm – Snapdragon 4 Gen 2 Mobile Platform – Official chipset reference for verifying Snapdragon 4 Gen 2 platform capabilities, CPU speed range, 4 nm process, modem, Wi-Fi, GPU, and UFS support mentioned in the phone specifications.
- The Times of India – Vivo Y400 5G launch coverage – Established news source useful for cross-checking launch context, Indian pricing, availability, and headline specifications against the official vivo page.
