Vivo Y400 5G (8GB RAM + 256GB) vs Vivo Y51A 2021 (6GB RAM + 128GB)
Quick Comparison
Vivo Y400 5G (8GB RAM + 256GB) has better RAM than Vivo Y51A 2021 (6GB RAM + 128GB). In terms of display resolution, Vivo Y51A 2021 (6GB RAM + 128GB) has better resolution of 2408 x 1080 than Vivo Y400 5G (8GB RAM + 256GB) which has resolution of 2400 x 1080. Vivo Y400 5G (8GB RAM + 256GB) has more internal memory than Vivo Y51A 2021 (6GB RAM + 128GB)
| Name | Vivo Y400 5G (8GB RAM + 256GB) | Vivo Y51A 2021 (6GB RAM + 128GB) |
| RAM | 8 GB | 6 GB |
|---|---|---|
| Display | 6.67 in | 6.58 in |
| Internal Memory | 256 GB | 128 GB |
| Battery | 6000 mAh | 5000 mAh |
| Camera | 50 MP + 2 MP Dual | 48 MP + 8 MP + 2 MP Triple |
| Price | Rs. 23998 | Rs. 20990 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is August 04, 2025. The cost of Vivo Y400 5G (8GB RAM + 256GB) is Rs. 23998. The launch Date of the second phone is June 28, 2021. The cost of Vivo Y51A 2021 (6GB RAM + 128GB) is Rs. 20990.
Display comparison
Vivo Y400 5G (8GB RAM + 256GB) has larger screen size of 6.67 inches in comparison to Vivo Y51A 2021 (6GB RAM + 128GB)'s 6.58 inch screen. Vivo Y400 5G (8GB RAM + 256GB) has AMOLED Screen type where as Vivo Y51A 2021 (6GB RAM + 128GB) has IPS LCD Screen type. Vivo Y51A 2021 (6GB RAM + 128GB) has display density of 415 PPI & Vivo Y400 5G (8GB RAM + 256GB) has only 395 PPI display density. In terms of screen to body ratio, Vivo Y400 5G (8GB RAM + 256GB) has better screen to body ratio of ~ 91.96% than Vivo Y51A 2021 (6GB RAM + 128GB)'s ~ 82.2%. Vivo Y400 5G (8GB RAM + 256GB) has 20:9 aspect ratio where as Vivo Y51A 2021 (6GB RAM + 128GB) has 21:9 aspect ratio.
Memory comparison
Vivo Y400 5G (8GB RAM + 256GB)'s larger 8 GB RAM is better for playing games and all with respect to Vivo Y51A 2021 (6GB RAM + 128GB)'s lower 6 GB RAM. Vivo Y400 5G (8GB RAM + 256GB) has more Internal Memory (256 GB) than Vivo Y51A 2021 (6GB RAM + 128GB) (128 GB).
Camera comparison
Vivo Y400 5G (8GB RAM + 256GB)'s 50 MP + 2 MP Dual Rear Camera outclasses Vivo Y51A 2021 (6GB RAM + 128GB)'s 48 MP + 8 MP + 2 MP Triple Rear Camera in terms of resolution. Vivo Y400 5G (8GB RAM + 256GB) will be better choice if you're looking to click lot of selfies as it has better 32 MP Front Camera in comparison to Vivo Y51A 2021 (6GB RAM + 128GB)'s 16 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 15 and the second one on 11 version.
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Full Comparison
| Name | Vivo Y400 5G (8GB RAM + 256GB) | Vivo Y51A 2021 (6GB RAM + 128GB) |
| General | ||
| Model | V2506 | Y51A 2021 |
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| SAR | 0.99 W/kg (Head) 0.8 W/kg (Body) | |
| Device Type | Smartphone | Smartphone |
| Release Date | August 04, 2025 | June 28, 2021 |
| In The Box | Handset, Quick Start Guide, USB Cable, Charger, Eject Tool, Phone Case, Protective Film (Applied), Warranty Card | |
| Design | ||
| Dimensions | 75.31 x 162.29 x 7.9 mm | 75.3 x 163.9 x 8.4 mm |
| Weight | 197 g | 188 g |
| Bezel less | No | |
| Colors | Olive Green | Glam White | |
| Display | ||
| Type | Color AMOLED Screen (1B Colors) | Color IPS LCD Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.67 inches, 1080 x 2400 pixels, 120 Hz | 6.58 inches, 1080 x 2408 pixels |
| Aspect Ratio | 20:9 | 21:9 |
| PPI | ~ 395 PPI | ~ 415 PPI |
| Screen to Body Ratio | ~ 91.96% | ~ 82.2% |
| Brightness | Local Peak Brightness: 1800 nits, Brightness HBM: 1200 nits | |
| Features | Color Gamut: P3 Wide Color Gamut | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 8 GB | 6 GB |
| Expandable RAM | Upto 8 GB Extra Virtual RAM | |
| Storage | 256 GB | 128 GB |
| Card Slot | Yes, upto 1 TB | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| 5G Bands | n1/n3/n5/n8/n28B/n40/n77/n78 | |
| VoLTE | Yes | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | 2.4 GHz / 5 GHz | |
| Bluetooth | Yes, v5.4 | Yes, v5.0, A2DP, LE |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| Extra | ||
| GPS | GPS, BeiDou, GLONASS, Galileo, QZSS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Fingerprint Sensor | Yes, In Display | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Ambient Light Sensor, Proximity Sensor, E-Compass, Gyroscope, Ordinary Motor | Accelerometer, Ambient Light Sensor, Proximity Sensor, E-compass, Entity Gyroscope |
| 3.5mm Headphone Jack | Yes | |
| AI Features | AI Transcript, AI Note Assist, Circle to Search | |
| Water Resistance | Yes | |
| IP Rating | IP68&69 | |
| Dust Resistant | Yes | |
| Extra Features | Hi-Res Audio Certification | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Main) 2 MP ƒ/2.4 (Macro) Macro | 48 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 2 MP ƒ/2.4 (Macro) Macro |
| OIS | Yes | |
| Auto Focus | Yes | Yes |
| Features | Night, Portrait, Photo, Video, 50 MP, Pano, Documents, Slo-mo, Time-lapse, Pro, Dual View, Live Photo, Underwater Photography | Portrait, Photo, Video, Pano, Live Photo, Slo-Mo, Time-Lapse, Pro, DOC, Super Night Mode |
| Video Recording | 4K, 1080p | 4K @ 30 fps UHD, 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 32 MP (Wide Angle) Punch Hole | 16 MP ƒ/2 (Wide Angle) |
| Front Video Recording | 1080p | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v15 | Android v11 |
| Custom UI | Funtouch OS 15 | |
| Chipset | Qualcomm Snapdragon 4 Gen2 | Qualcomm Snapdragon 662 |
| CPU | 2.2 GHz, Octa Core Processor | 2 GHz, Octa Core Processor |
| Core Details | 2x Performance Cores@2.2GHz & 6x Efficiency Cores@2GHz | 4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver |
| GPU | Adreno | Adreno 610 |
| Java | No | No |
| Browser | Yes | Yes, supports HTML5 |
| Multimedia | ||
| Yes | Yes | |
| Music | AAC, WAV, MP3, MP2, MP1, MIDI, Vorbis, APE, FLAC, OPUS | Yes |
| Video | MP4, 3GP, AVI, TS, MKV, FLV | Yes |
| FM Radio | No | Yes |
| Speaker Type | Dual Stereo | |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6000 mAh, Li-ion Battery | 5000 mAh, Li-Po Battery |
| Fast Charging | Yes, 90W Fast Charging | Yes, 18W Fast Charging |