| Local Name | Redmi S2 |
| Technology | GSM / CDMA / HSPA / LTE |
| 4G Bands | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) |
| 3G Bands | HSDPA 850 / 900 / 1900 / 2100 |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | CDMA 800 & TD-SCDMA |
| Speed | HSPA, LTE |
| GPRS | Yes |
| EDGE | Yes |
| Announced | 2018, May |
| Status | Available. Released 2018, May |
| Dimensions | 160.7 x 77.3 x 8.1 mm (6.33 x 3.04 x 0.32 in) |
| Weight | 170 g (6.00 oz) |
| Build | Front glass, aluminum body |
| SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Display Type | IPS LCD capacitive touchscreen, 16M colors |
| Screen Size | 5.99 inches, 92.6 cm2 (~74.5% screen-to-body ratio) |
| Resolution | 720 x 1440 pixels, 18:9 ratio (~269 ppi density) |
| Mulitouch | Yes | MIUI 9.5 |
| OS | Android 8.1 (Oreo) |
| Chipset | Qualcomm MSM8953 Snapdragon 625 |
| CPU | Octa-core 2.0 GHz Cortex-A53 |
| GPU | Adreno 506 |
| Card Slot | microSD, up to 256 GB (dedicated slot) |
| Internal Memory | 64 GB, 4 GB RAM or 32 GB, 3 GB RAM |
| Primary Camera | Dual: 12 MP (f/2.2, 1.25μm, PDAF) + 5 MP, gyro-EIS, phase detection autofocus, LED flash |
| Camera Features | Geo-tagging, touch focus, face detection, panorama, HDR |
| Video | 1080p@30fps |
| Secondary Camera | 16 MP (2.0µm), HDR, LED flash |
| Alert Types | Vibration; MP3, WAV ringtones |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| Sound | Active noise cancellation with dedicated mic |
| WLAN | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Bluetooth | 4.2, A2DP, LE |
| GPS | Yes, with A-GPS, GLONASS, BDS |
| Infrared Port | Yes |
| Radio | FM radio |
| USB | microUSB 2.0 |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
| Messaging | SMS(threaded view), MMS, Email, Push Email, IM |
| Browser | HTML5 |
| Features Summary | MP4/H.265 player, MP3/WAV/eAAC+/FLAC player, Photo/video editor, Document viewer, 5V/2A 10W charging |
| Battery | Non-removable Li-Po 3080 mAh battery |
| Colors | Rose Gold, Champagne Gold, Platinum Silver |
