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

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Launch

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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.

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Years after launch, the S21 FE 5G has matured into a compelling value proposition rather than a cutting-edge headliner, and that shift is exactly what this article focuses on. Rather than simply restating numbers, we break down where this phone still earns its keep, where age shows, and which type of buyer gets the most from it today. All hardware claims here track Samsung’s official documentation and regulatory listings; the full numbers live in the dedicated specifications table below.

Full Specifications

Network

Launch

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Platform

Memory

Main Camera

Selfie camera

Sound

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Features

Battery

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Our Tests

Price and Availability

The Samsung Galaxy S21 FE 5G offers a compelling combination of features and performance. While the base price is around €185, the actual cost may vary depending on your location and retailer. Below, you’ll find the approximate price of the Samsung Galaxy S21 FE 5G converted into various currencies. Please note that these are estimates based on recent exchange rates as of June 11, 2026 and may not reflect the exact price you’ll find at a retailer.

• United States: $213
• Japan: ¥34,270
• United Kingdom: £160
• Australia: A$305
• Canada: C$298
• Taiwan: NT$6,760
• Denmark: kr1.381
• Saudi Arabia: ﷼801
• South Korea: ₩325,324
• Germany: €185
• Brazil: R$1.106
• Vietnam: ₫5.600.275
• Kenya: KSh 27,692
• India: ₹20,349
• Indonesia: Rp 3.825.746
• Nigeria: ₦289,024
• Pakistan: ₨59,438
• Philippines: ₱13,105
• Bangladesh: ৳২৬,২২৮

Where the Galaxy S21 FE 5G Lands on Value Today

The S21 FE was conceived as a “flagship-lite” device, and that positioning has only become more favorable over time. With flagship internals from the 2021 cycle now available at mid-range money, the phone delivers a genuinely premium feel — IP68 dust and water resistance, an aluminum frame, wireless charging, and Samsung DeX — that most phones in its current price bracket simply do not offer. For shoppers who prioritize a polished overall experience over the latest silicon, it remains one of the more sensible Samsung buys on the second-hand and clearance market.

Design and Build: Premium Touches at a Friendlier Tier

At 155.7 x 74.5 x 7.9 mm and 177 g, the S21 FE 5G is comfortably one-hand friendly and noticeably lighter than many modern flagships. The construction mixes a Gorilla Glass Victus front with a plastic back and an aluminum frame — a sensible compromise that keeps weight and cost down without feeling cheap. Crucially, it retains full IP68 ingress protection (rated for immersion up to 1.5 m for 30 minutes), a feature still rare at this price. The color choices — White, Graphite, Lavender, and Olive — lean understated, matching the phone’s grown-up, no-frills character.

Display: A 120Hz AMOLED That Still Impresses

The 6.4-inch Dynamic AMOLED 2X panel is the standout reason to consider this phone. With a 1080 x 2340 resolution (~403 ppi), a 120Hz refresh rate, and HDR10+ support, scrolling is fluid and content looks vivid. Our measured peak brightness of 792 nits means the screen holds up reasonably well outdoors, and the relatively compact 6.4-inch footprint with an ~86.7% screen-to-body ratio strikes a nice balance between immersion and usability. For media, gaming, and everyday browsing, this display still feels distinctly flagship.

Performance: 2021 Flagship Silicon, 2020s Expectations

Powered by the Snapdragon 888 (Version 1) or Exynos 2100 (Version 2), both built on a 5 nm process, the S21 FE 5G remains capable for demanding tasks. Benchmark figures back this up: AnTuTu scores of 566,529 (v8) and 719,696 (v9), a GeekBench result of 3,049 (v5.1), and 56fps in GFXBench’s ES 3.1 onscreen test. Paired with up to 8GB of RAM and fast UFS 3.1 storage in 128GB or 256GB capacities, real-world responsiveness stays strong. The trade-off is the Snapdragon 888’s well-documented thermal behavior, so sustained heavy gaming can throttle — worth noting for power users, though everyday performance is rarely a concern.

Camera System: Flexible Triple Setup

Samsung gave the S21 FE a genuinely versatile rear array: a 12 MP wide (f/1.8, OIS, dual pixel PDAF), an 8 MP telephoto (f/2.4) with 3x optical zoom and OIS, and a 12 MP ultrawide (f/2.2) with a 123-degree field of view. That dedicated optical zoom is something many rivals omit, and OIS on two of the three lenses helps in low light. Video tops out at 4K@60fps with HDR10+ and gyro-EIS, while the 32 MP front camera handles selfies and 4K video capably. It is a well-rounded system that favors consistency over gimmicks.

Battery and Charging: Dependable, If Not Cutting-Edge

A 4500 mAh Li-Ion cell drives the phone, and our endurance testing returned a solid 92-hour rating, comfortably covering a full day for most users. Charging is where age shows: 25W wired charging (PD3.0, rated to 50% in 30 minutes) is reasonable but no longer fast by current standards. The bonus is 15W wireless charging plus reverse wireless charging — convenience features that remain uncommon in this segment and add real day-to-day flexibility.

Software and Longevity

The S21 FE 5G shipped with Android 12 and Samsung’s One UI, and it was covered by Samsung’s commitment of up to four major Android upgrades. As reflected in current listings showing One UI 8, the device has aged into newer software, extending its useful life well beyond launch. Combined with security updates, this longevity is a core part of the value argument and a meaningful advantage over short-supported budget alternatives.

Connectivity and Extras

Connectivity is comprehensive: 5G (SA/NSA/Sub6, with mmWave on U.S. variants), Wi-Fi 6 (dual-band), Bluetooth 5.0, NFC, and USB Type-C with OTG. Positioning covers GPS, GLONASS, BDS, and Galileo. An under-display optical fingerprint sensor handles biometrics, and stereo speakers (measured at a good -26.9 LUFS) with 32-bit/384kHz audio round out the experience. There is no 3.5mm jack and no microSD slot, so storage choice at purchase matters.

Who Should Buy the Galaxy S21 FE 5G

This phone suits buyers who want an authentic flagship feel — premium display, IP68, wireless charging, optical zoom, and DeX — without paying flagship prices. It is ideal for Samsung loyalists upgrading from an older mid-ranger, media-focused users, and anyone who values a compact, well-supported device. Hardcore mobile gamers chasing sustained peak performance or buyers who need the fastest possible charging may want to look elsewhere.

Conclusion

The Samsung Galaxy S21 FE 5G has aged into one of Samsung’s smarter value picks: a phone that still delivers a flagship-grade 120Hz AMOLED, a flexible triple camera with optical zoom, IP68 durability, wireless charging, and years of software support. Its dated charging speed and the Snapdragon 888’s thermals are the main compromises. If you want a premium, well-rounded Samsung experience at a mid-range price — and you can confirm current pricing and availability before buying — the S21 FE 5G remains an easy phone to recommend.

Official references

• Samsung Galaxy S21 FE 5G official product page – Primary manufacturer source for model identity, official positioning, feature claims, and core hardware specifications.
• Samsung Newsroom Galaxy S21 FE 5G announcement (news.samsung.com) – Official launch source to corroborate announcement details, availability context, and Samsung-stated headline specifications.
• FCC Equipment Authorization System – Primary U.S. regulator database for model/FCC ID validation, wireless approvals, SAR filings, and radio-related documentation.
• Wi-Fi Alliance Product Finder – Primary certification database for verifying Wi-Fi capability and certification details for specific Samsung model variants.
• Bluetooth SIG Product Listings (bluetooth.com) – Primary Bluetooth qualification source for confirming Bluetooth support and certified model listings.

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