| ratings |
| Overall NDTV Rating | Read Review | - | Read Review |
| Design Rating | | - | |
| Display Rating | | - | |
| Software Rating | | - | |
| Performance Rating | | - | |
| Battery Life Rating | | - | |
| Camera Rating | | - | |
| Value for Money Rating | | - | |
| key specs |
| Display | 5.50-inch | 5.15-inch | 5.80-inch |
| Processor | Qualcomm Snapdragon 625 | Qualcomm Snapdragon 835 | Samsung Exynos 8895 |
| Front Camera | 5-megapixel | 8-megapixel | 8-megapixel |
| Rear Camera | 12-megapixel | 12-megapixel + 12-megapixel | 12-megapixel |
| RAM | 4GB | 6GB | 4GB |
| Storage | 64GB | 64GB | 64GB |
| Battery Capacity | 3080mAh | 3350mAh | 3000mAh |
| OS | Android 7.1.2 | Android | Android 7.0 |
| Resolution | 1080x1920 pixels | 1080x1920 pixels | 1440x2960 pixels |
| general |
| Brand | Xiaomi | Xiaomi | Samsung |
| Model | Mi A1 | Mi 6 | Galaxy S8 |
| Release date | September 1, 2017 | April 1, 2017 | March 1, 2017 |
| Launched in India | Yes | - | Yes |
| Form factor | Touchscreen | Touchscreen | Touchscreen |
| Dimensions (mm) | 155.40 x 75.80 x 7.30 | 145.17 x 70.49 x 7.45 | 148.90 x 68.10 x 8.00 |
| Weight (g) | 165.00 | 182.00 | 155.00 |
| Battery capacity (mAh) | 3080 | 3350 | 3000 |
| Removable battery | No | No | No |
| Colours | Rose Gold, Gold, Black | Black, White, Blue, Silver | Midnight Black, Orchid Gray, Arctic Silver, Coral Blue, Maple Gold |
| Fast charging | - | Quick Charge 3.0 | Quick Charge 2.0 |
| display |
| Screen size (inches) | 5.50 | 5.15 | 5.80 |
| Touchscreen | Yes | Yes | Yes |
| Resolution | 1080x1920 pixels | 1080x1920 pixels | 1440x2960 pixels |
| Aspect ratio | 16:9 | 16:9 | 18.5:9 |
| Protection type | - | Gorilla Glass | Gorilla Glass |
| Pixels per inch (PPI) | - | 428 | 570 |
| hardware |
| Processor | 2GHz octa-core | octa-core (4x2.45GHz + 4x1.9GHz) | octa-core (4x2.35GHz + 4x1.9GHz) |
| Processor make | Qualcomm Snapdragon 625 | Qualcomm Snapdragon 835 | Samsung Exynos 8895 |
| RAM | 4GB | 6GB | 4GB |
| Internal storage | 64GB | 64GB | 64GB |
| Expandable storage | Yes | No | Yes |
| Expandable storage type | microSD | - | microSD |
| Expandable storage up to (GB) | 128 | - | 256 |
| camera |
| Rear camera | 12-megapixel | 12-megapixel (f/1.8, 1.25-micron) + 12-megapixel (f/1.6, 2.0-micron) | 12-megapixel (f/1.7, 1.4-micron) |
| Rear flash | Dual LED | Dual LED | Dual LED |
| Front camera | 5-megapixel | 8-megapixel | 8-megapixel (f/1.7, 1.22-micron) |
| Rear autofocus | - | Phase detection autofocus | Phase detection autofocus |
| Front autofocus | - | - | Yes |
| software |
| Operating system | Android 7.1.2 | Android | Android 7.0 |
| Skin | - | MIUI | - |
| connectivity |
| Wi-Fi | Yes | Yes | Yes |
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 b/g/n/ac | 802.11 a/b/g/n/ac |
| GPS | Yes | Yes | Yes |
| Bluetooth | Yes, v 4.20 | Yes, v 5.00 | Yes |
| NFC | No | Yes | Yes |
| Infrared | Yes | No | No |
| USB OTG | Yes | No | No |
| USB Type-C | Yes | Yes | Yes |
| Headphones | 3.5mm | 3.5mm | 3.5mm |
| FM | No | Yes | No |
| Number of SIMs | 2 | 2 | 1 |
| Wi-Fi Direct | No | Yes | No |
| Mobile High-Definition Link (MHL) | No | No | No |
| sim 1 |
| SIM Type | Nano-SIM | Micro-SIM | - |
| GSM/CDMA | GSM | GSM | GSM |
| 3G | Yes | Yes | Yes |
| 4G/ LTE | Yes | Yes | Yes |
| sim 2 |
| SIM Type | Nano-SIM | Nano-SIM | - |
| GSM/CDMA | GSM | GSM | - |
| 3G | Yes | Yes | - |
| 4G/ LTE | Yes | Yes | - |
| sensors |
| Fingerprint sensor | Yes | 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 | No | No | Yes |
| Temperature sensor | No | No | No |