| key specs |
| Display | 6.21-inch | 6.30-inch | 5.15-inch |
| Processor | Qualcomm Snapdragon 845 | Samsung Exynos 8895 | Qualcomm Snapdragon 821 |
| Front Camera | 20-megapixel | 8-megapixel | 4-megapixel |
| Rear Camera | 12-megapixel + 12-megapixel | 12-megapixel + 12-megapixel | 12-megapixel |
| RAM | 6GB | 6GB | 3GB |
| Storage | 64GB | 64GB | 64GB |
| Battery Capacity | 3400mAh | 3300mAh | 3200mAh |
| OS | Android Oreo | Android 7.1.1 | Android |
| Resolution | 1080x2248 pixels | 1440x2960 pixels | 1080x1920 pixels |
| general |
| Brand | Xiaomi | Samsung | Xiaomi |
| Model | Mi 8 | Galaxy Note 8 | Mi 5s |
| Release date | May 1, 2018 | August 1, 2017 | September 1, 2016 |
| Form factor | Touchscreen | Touchscreen | Touchscreen |
| Dimensions (mm) | 154.90 x 74.80 x 7.60 | 162.50 x 74.80 x 8.60 | 145.60 x 70.30 x 8.25 |
| Weight (g) | 175.00 | 195.00 | 145.00 |
| Battery capacity (mAh) | 3400 | 3300 | 3200 |
| Colours | White, Gold, Light Blue, Black | Midnight Black, Orchid Gray | Gold, Dark Grey, Silver, Rose Gold |
| Launched in India | - | Yes | - |
| Removable battery | - | No | No |
| Fast charging | - | Quick Charge 2.0 | - |
| SAR value | - | 0.22 | - |
| display |
| Screen size (inches) | 6.21 | 6.30 | 5.15 |
| Touchscreen | Yes | Yes | Yes |
| Resolution | 1080x2248 pixels | 1440x2960 pixels | 1080x1920 pixels |
| Aspect ratio | 18.7:9 | 18.5:9 | - |
| Pixels per inch (PPI) | 402 | - | - |
| Protection type | - | Gorilla Glass | - |
| hardware |
| Processor | octa-core (4x2.8GHz + 4x1.8GHz) | octa-core (4x2.3GHz + 4x1.7GHz) | 2.15GHz quad-core |
| Processor make | Qualcomm Snapdragon 845 | Samsung Exynos 8895 | Qualcomm Snapdragon 821 |
| RAM | 6GB | 6GB | 3GB |
| Internal storage | 64GB | 64GB | 64GB |
| Expandable storage | - | Yes | No |
| Expandable storage type | - | microSD | - |
| Expandable storage up to (GB) | - | 256 | - |
| camera |
| Rear camera | 12-megapixel (f/1.8, 1.4-micron) + 12-megapixel (f/2.4, 1.0-micron) | 12-megapixel (f/1.7, 1.4-micron) + 12-megapixel (f/2.4, 1.0-micron) | 12-megapixel |
| Rear autofocus | Phase detection autofocus | Phase detection autofocus | - |
| Rear flash | Dual LED | LED | Dual LED |
| Front camera | 20-megapixel (f/2.0, 0.9-micron) | 8-megapixel (f/1.7, 1.22-micron) | 4-megapixel |
| Front autofocus | - | Yes | - |
| software |
| Operating system | Android Oreo | Android 7.1.1 | Android |
| Skin | MIUI 10 | Samsung Experience 8.5 | MIUI |
| connectivity |
| Wi-Fi | Yes | Yes | Yes |
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 a/b/g/n/ac | 802.11 a/b/g/n/ac |
| GPS | Yes | Yes | Yes |
| Bluetooth | Yes, v 5.00 | Yes, v 5.00 | Yes, v 4.20 |
| NFC | Yes | Yes | Yes |
| USB OTG | Yes | Yes | Yes |
| USB Type-C | Yes | Yes | - |
| Number of SIMs | 2 | 2 | 2 |
| Infrared | - | No | No |
| Headphones | - | Yes | 3.5mm |
| FM | - | No | No |
| Wi-Fi Direct | - | No | No |
| Mobile High-Definition Link (MHL) | - | No | No |
| sim 1 |
| SIM Type | Nano-SIM | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM | GSM |
| 3G | Yes | Yes | Yes |
| 4G/ LTE | Yes | Yes | Yes |
| sim 2 |
| SIM Type | Nano-SIM | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM | GSM |
| 3G | Yes | Yes | Yes |
| 4G/ LTE | Yes | Yes | Yes |
| sensors |
| Face unlock | Yes | - | - |
| Fingerprint sensor | Yes | Yes | - |
| Compass/ Magnetometer | Yes | Yes | Yes |
| Proximity sensor | Yes | Yes | Yes |
| Accelerometer | Yes | Yes | Yes |
| Ambient light sensor | Yes | Yes | Yes |
| Gyroscope | Yes | Yes | Yes |
| Barometer | Yes | Yes | Yes |
| Temperature sensor | - | No | No |
| ratings |
| Overall NDTV Rating | - | Read Review | - |
| Design Rating | - | | - |
| Display Rating | - | | - |
| Software Rating | - | | - |
| Performance Rating | - | | - |
| Battery Life Rating | - | | - |
| Camera Rating | - | | - |
| Value for Money Rating | - | | - |