| key specs |
| Display | 6.39-inch | 6.00-inch | 6.30-inch | 6.30-inch |
| Processor | Qualcomm Snapdragon 855 | 2.2GHz octa-core | MediaTek Helio P60 | MediaTek Helio P60 |
| Front Camera | 20-megapixel | 24-megapixel | 25-megapixel | 16-megapixel |
| Rear Camera | 48-megapixel + 12-megapixel + 16-megapixel | 24-megapixel + 8-megapixel + 5-megapixel | 16-megapixel + 2-megapixel | 16-megapixel + 2-megapixel |
| RAM | 6GB | 4GB | 6GB | 4GB |
| Storage | 128GB | 64GB | 64GB | 64GB |
| Battery Capacity | 3300mAh | 3300mAh | 3500mAh | 3500mAh |
| OS | Android 9.0 | Android 8.0 | Android Oreo | Android Oreo |
| Resolution | 1080x2340 pixels | 1080x2220 pixels | 1080x2340 pixels | 1080x2340 pixels |
| general |
| Brand | Xiaomi | Samsung | Oppo | Oppo |
| Model | Mi 9 | Galaxy A7 (2018) | F9 Pro | F9 |
| Release date | February 1, 2019 | September 1, 2018 | August 1, 2018 | August 1, 2018 |
| Form factor | Touchscreen | - | Touchscreen | Touchscreen |
| Dimensions (mm) | 157.50 x 74.67 x 7.61 | 159.80 x 76.80 x 7.50 | 156.70 x 74.00 x 7.90 | 156.70 x 74.00 x 7.90 |
| Weight (g) | 173.00 | 168.00 | 169.00 | 169.00 |
| Battery capacity (mAh) | 3300 | 3300 | 3500 | 3500 |
| Fast charging | Proprietary | - | VOOC | - |
| Wireless charging | Yes | No | - | - |
| Colours | Deep Grey, Holographic Illusion Blue, Holographic Illusion | Black, Blue, Gold, Pink | Sunrise Red, Twilight Blue, Starry Purple | Sunrise Red, Twilight Blue, Starry Purple |
| Launched in India | - | Yes | Yes | Yes |
| Removable battery | - | No | - | - |
| display |
| Screen size (inches) | 6.39 | 6.00 | 6.30 | 6.30 |
| Touchscreen | Yes | Yes | Yes | Yes |
| Resolution | 1080x2340 pixels | 1080x2220 pixels | 1080x2340 pixels | 1080x2340 pixels |
| Protection type | Gorilla Glass | - | - | - |
| Aspect ratio | 19.5:9 | 18.5:9 | 19.5:9 | 19.5:9 |
| hardware |
| Processor | 2.84GHz octa-core | 2.2GHz octa-core | 2GHz octa-core | 2GHz octa-core |
| Processor make | Qualcomm Snapdragon 855 | - | MediaTek Helio P60 (MT6771) | MediaTek Helio P60 (MT6771) |
| RAM | 6GB | 4GB | 6GB | 4GB |
| Internal storage | 128GB | 64GB | 64GB | 64GB |
| Expandable storage | - | Yes | Yes | Yes |
| Expandable storage type | - | microSD | microSD | microSD |
| Expandable storage up to (GB) | - | 512 | 256 | 256 |
| Dedicated microSD slot | - | - | Yes | - |
| camera |
| Rear camera | 48-megapixel (f/1.75, 0.8-micron) + 12-megapixel (f/2.2, 1.0-micron) + 16-megapixel (f/2.2, 1.0-micron) | 24-megapixel (f/1.7) + 8-megapixel (f/2.4) + 5-megapixel (f/2.2) | 16-megapixel (f/1.8) + 2-megapixel (f/2.4) | 16-megapixel (f/1.8) + 2-megapixel (f/2.4) |
| Rear autofocus | Yes | Yes | Yes | - |
| Rear flash | Yes | Yes | Yes | Yes |
| Front camera | 20-megapixel (f/2.0, 0.9-micron) | 24-megapixel (f/2.0) | 25-megapixel (f/2.0) | 16-megapixel |
| Front autofocus | - | No | - | - |
| Front flash | - | Yes | - | - |
| software |
| Operating system | Android 9.0 | Android 8.0 | Android Oreo | Android Oreo |
| Skin | MIUI 10 | - | Color OS 5.2 | Color OS 5.2 |
| connectivity |
| Wi-Fi | Yes | 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 | 802.11 a/b/g/n/ac |
| GPS | Yes | Yes | Yes | Yes |
| Bluetooth | Yes, v 5.00 | Yes, v 5.00 | Yes, v 4.20 | 4.20 |
| NFC | Yes | No | No | - |
| USB Type-C | Yes | - | - | - |
| Number of SIMs | 2 | 2 | 2 | 2 |
| FM | - | Yes | - | - |
| Active 4G on both SIM cards | - | Yes | - | - |
| Infrared | - | - | No | - |
| USB OTG | - | - | Yes | Yes |
| Micro-USB | - | - | Yes | Yes |
| Lightning | - | - | No | - |
| Headphones | - | - | 3.5mm | 3.5mm |
| sim 1 |
| SIM Type | Nano-SIM | 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 | Nano-SIM |
| GSM/CDMA | GSM | - | GSM | GSM |
| 3G | Yes | - | Yes | Yes |
| 4G/ LTE | Yes | Yes | Yes | Yes |
| sensors |
| Face unlock | Yes | Yes | Yes | - |
| 3D face recognition | Yes | - | - | - |
| Fingerprint sensor | Yes | Yes | Yes | Yes |
| Compass/ Magnetometer | Yes | Yes | Yes | Yes |
| Proximity sensor | Yes | Yes | Yes | Yes |
| Accelerometer | Yes | Yes | Yes | Yes |
| Ambient light sensor | Yes | Yes | Yes | Yes |
| Gyroscope | Yes | Yes | - | - |
| ratings |
| Overall NDTV Rating | - | Read Review | Read Review | Read Review |
| Design Rating | - | | | |
| Display Rating | - | | | |
| Software Rating | - | | | |
| Performance Rating | - | | | |
| Battery Life Rating | - | | | |
| Camera Rating | - | | | |
| Value for Money Rating | - | | | |