| ratings | | | | |
| Overall NDTV Rating | - | Read Review | - | - |
| Design Rating | - | | - | - |
| Display Rating | - | | - | - |
| Software Rating | - | | - | - |
| Performance Rating | - | | - | - |
| Battery Life Rating | - | | - | - |
| Camera Rating | - | | - | - |
| Value for Money Rating | - | | - | - |
| key specs | | | | |
| Display | 5.99-inch | 5.99-inch | - | - |
| Processor | 2GHz octa-core | octa-core | - | - |
| Front Camera | 16-megapixel | 20-megapixel | - | - |
| Resolution | 720x1440 pixels | 1080x2160 pixels | - | - |
| RAM | 3GB | 4GB | - | - |
| OS | Android 8.1 Oreo | Android 8.1 Oreo | - | - |
| Storage | 32GB | 64GB | - | - |
| Rear Camera | 12-megapixel | 12-megapixel + 20-megapixel | - | - |
| Battery Capacity | 3080mAh | 3000mAh | - | - |
| general | | | | |
| Release date | May 2018 | July 2018 | - | - |
| Form factor | Touchscreen | Touchscreen | - | - |
| Dimensions (mm) | 160.73 x 77.26 x 8.10 | 158.70 x 75.40 x 7.30 | - | - |
| Weight (g) | 170.00 | 168.00 | - | - |
| Battery capacity (mAh) | 3080 | 3000 | - | - |
| Removable battery | No | No | - | - |
| Colours | Black, Rose Gold, Gold, White, Blue, Red, Pink, Gray, Silver | Black, Gold, Lake Blue, Rose Gold | - | - |
| Launched in India | - | Yes | - | - |
| display | | | | |
| Screen size (inches) | 5.99 | 5.99 | - | - |
| Touchscreen | Yes | Yes | - | - |
| Resolution | 720x1440 pixels | 1080x2160 pixels | - | - |
| Aspect ratio | - | 18:9 | - | - |
| Pixels per inch (PPI) | - | 403 | - | - |
| hardware | | | | |
| Processor | 2GHz octa-core | octa-core (4x2.2GHz + 4x1.8GHz) | - | - |
| Processor make | Snapdragon 625 | Qualcomm Snapdragon 660 | - | - |
| RAM | 3GB | 4GB | - | - |
| Internal storage | 32GB | 64GB | - | - |
| Expandable storage | Yes | No | - | - |
| Expandable storage type | microSD | microSD | - | - |
| Expandable storage up to (GB) | 256 | - | - | - |
| camera | | | | |
| Rear camera | 12-megapixel | 12-megapixel (f/1.8, 1.25-micron) + 20-megapixel (f/1.8, 1.0-micron) | - | - |
| Rear flash | LED | Dual LED | - | - |
| Front camera | 16-megapixel | 20-megapixel (f/2.2, 1.0-micron) | - | - |
| Front flash | Yes | LED | - | - |
| Rear autofocus | - | Phase detection autofocus | - | - |
| software | | | | |
| Operating system | Android 8.1 Oreo | Android 8.1 Oreo | - | - |
| Skin | MIUI 9 | - | - | - |
| connectivity | | | | |
| Wi-Fi | Yes | Yes | - | - |
| Wi-Fi standards supported | 802.11 b/g/n | 802.11 a/b/g/n/ac | - | - |
| GPS | Yes | Yes | - | - |
| Bluetooth | Yes, v 4.20 | Yes, v 5.00 | - | - |
| Infrared | Yes | - | - | - |
| Number of SIMs | 2 | 2 | - | - |
| NFC | - | Yes | - | - |
| USB OTG | - | Yes | - | - |
| Headphones | - | No | - | - |
| sim 1 | | | | |
| SIM Type | Nano-SIM | Nano-SIM | - | - |
| GSM/CDMA | GSM | GSM | - | - |
| 3G | Yes | Yes | - | - |
| 4G/ LTE | Yes | Yes | - | - |
| sim 2 | | | | |
| SIM Type | Nano-SIM | Nano-SIM | - | - |
| GSM/CDMA | GSM | GSM | - | - |
| 3G | Yes | Yes | - | - |
| 4G/ LTE | Yes | Yes | - | - |
| sensors | | | | |
| Compass/ Magnetometer | Yes | Yes | - | - |
| Proximity sensor | Yes | Yes | - | - |
| Accelerometer | Yes | Yes | - | - |
| Ambient light sensor | Yes | Yes | - | - |
| Gyroscope | Yes | Yes | - | - |
| Fingerprint sensor | - | Yes | - | - |
Xiaomi Enters Bangladesh, Redmi S2, Redmi 5, and Redmi Note 5 Go on Sale in the Country
Xiaomi Sends Media Invites for Smartphone Launch on June 7, Teases Camera
Redmi S2 India Launch Teased for June 7, May Be Released as Redmi Y2
Redmi S2 With 16-Megapixel Selfie Camera, 18:9 Display Launched in China
Redmi S2 Launch Today: Specifications, Price, and More You Should Know