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| key specs | ||||
| Display | 6.67-inch | 5.20-inch | ||
| Processor | Qualcomm Snapdragon 4 Gen 2 | Qualcomm Snapdragon 425 | ||
| Front Camera | 32-megapixel | 5-megapixel | ||
| Rear Camera | 50-megapixel + 2-megapixel | 13-megapixel | ||
| RAM | 8GB | 3GB | ||
| Storage | 128GB, 256GB | 16GB | ||
| Battery Capacity | 6000mAh | 2730mAh | ||
| OS | Android 15 | Android 6.0 | ||
| Resolution | 1080x2400 pixels | 1280x720 pixels | ||
| general | ||||
| Brand | Vivo | Vivo | ||
| Model | Y400 5G | Y55s | ||
| Release date | August 4, 2025 | February 1, 2017 | ||
| Launched in India | Yes | Yes | ||
| Form factor | Touchscreen | Touchscreen | ||
| Dimensions (mm) | 162.29 x 75.31 x 7.90 | 147.90 x 72.90 x 7.50 | ||
| Weight (g) | 197.00 | 142.00 | ||
| IP rating | IP69 | - | ||
| Battery capacity (mAh) | 6000 | 2730 | ||
| Removable battery | No | No | ||
| Fast charging | 90W Fast Charging | - | ||
| Wireless charging | No | - | ||
| Colours | Glam White, Olive Green | Gold, Space Grey | ||
| SAR value | - | 1.08 | ||
| display | ||||
| Refresh Rate | 120 Hz | - | ||
| Resolution Standard | FHD+ | - | ||
| Screen size (inches) | 6.67 | 5.20 | ||
| Touchscreen | Yes | Yes | ||
| Resolution | 1080x2400 pixels | 1280x720 pixels | ||
| Pixels per inch (PPI) | 394 | 282 | ||
| Aspect ratio | - | 16:9 | ||
| hardware | ||||
| Processor | octa-core | 1.4GHz quad-core | ||
| Processor make | Qualcomm Snapdragon 4 Gen 2 | Qualcomm Snapdragon 425 | ||
| RAM | 8GB | 3GB | ||
| Internal storage | 128GB, 256GB | 16GB | ||
| Expandable storage | - | Yes | ||
| Expandable storage type | - | microSD | ||
| Expandable storage up to (GB) | - | 256 | ||
| camera | ||||
| Rear camera | 50-megapixel + 2-megapixel | 13-megapixel (f/2.2) | ||
| No. of Rear Cameras | 2 | - | ||
| Rear flash | Yes | LED | ||
| Front camera | 32-megapixel | 5-megapixel (f/2.2) | ||
| No. of Front Cameras | 1 | - | ||
| Rear autofocus | - | Yes | ||
| software | ||||
| Operating system | Android 15 | Android 6.0 | ||
| Skin | FuntouchOS 15 | Funtouch OS 3.0 | ||
| connectivity | ||||
| Wi-Fi | Yes | Yes | ||
| GPS | Yes | Yes | ||
| Bluetooth | Yes | Yes | ||
| NFC | No | No | ||
| USB OTG | Yes | Yes | ||
| USB Type-C | Yes | - | ||
| Headphones | Type-C | 3.5mm | ||
| Number of SIMs | 2 | 2 | ||
| Active 4G on both SIM cards | Yes | - | ||
| Infrared | - | No | ||
| Micro-USB | - | Yes | ||
| FM | - | Yes | ||
| Wi-Fi Direct | - | No | ||
| Mobile High-Definition Link (MHL) | - | No | ||
| sim 1 | ||||
| SIM Type | Nano-SIM | Micro-SIM | ||
| GSM/CDMA | - | GSM | ||
| 3G | - | Yes | ||
| 4G/ LTE | - | Yes | ||
| sim 2 | ||||
| SIM Type | Nano-SIM | - | ||
| 3G | - | No | ||
| 4G/ LTE | - | No | ||
| sensors | ||||
| In-Display Fingerprint Sensor | Yes | - | ||
| Compass/ Magnetometer | Yes | Yes | ||
| Proximity sensor | Yes | Yes | ||
| Accelerometer | Yes | Yes | ||
| Ambient light sensor | Yes | Yes | ||
| Gyroscope | Yes | Yes | ||
| Barometer | - | No | ||
| Temperature sensor | - | No | ||
| ratings | ||||
| Overall NDTV Rating | - | Read Review | ||
| Design Rating | - | |||
| Display Rating | - | |||
| Software Rating | - | |||
| Performance Rating | - | |||
| Battery Life Rating | - | |||
| Camera Rating | - | |||
| Value for Money Rating | - | |||
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