| ratings |
| Overall NDTV Rating | Read Review | Read Review | Read Review | Read Review |
| Design Rating | | | | |
| Display Rating | | | | |
| Software Rating | | | | |
| Performance Rating | | | | |
| Battery Life Rating | | | | |
| Camera Rating | | | | |
| Value for Money Rating | | | | |
| key specs |
| Display | 6.30-inch | 6.20-inch | 6.18-inch | 5.45-inch |
| Processor | MediaTek Helio P70 | Qualcomm Snapdragon 450 | Qualcomm Snapdragon 845 | MediaTek Helio P22 |
| Front Camera | 25-megapixel | 5-megapixel | 20-megapixel | 5-megapixel |
| Rear Camera | 13-megapixel + 2-megapixel | 13-megapixel + 2-megapixel | 12-megapixel + 5-megapixel | 12-megapixel + 5-megapixel |
| RAM | 4GB | 2GB | 6GB | 3GB |
| Storage | 64GB | 16GB | 64GB | 32GB |
| Battery Capacity | 3500mAh | 4230mAh | 4000mAh | 3000mAh |
| OS | Android 8.1 Oreo | Android 8.1 | Android 8.1 | Android 8.1 Oreo |
| Resolution | 1080x2340 pixels | 720x1520 pixels | 1080x2246 pixels | 720x1440 pixels |
| general |
| Brand | Realme | Realme | Poco | Xiaomi |
| Model | U1 | C1 | F1 | Redmi 6 |
| Release date | November 1, 2018 | September 1, 2018 | August 1, 2018 | June 1, 2018 |
| Launched in India | Yes | Yes | Yes | Yes |
| Form factor | Touchscreen | Touchscreen | Touchscreen | Touchscreen |
| Dimensions (mm) | 157.00 x 74.00 x 8.00 | 156.20 x 75.60 x 8.20 | 155.50 x 75.20 x 8.80 | 147.50 x 71.50 x 8.30 |
| Weight (g) | 168.00 | 168.00 | 182.00 | 146.00 |
| Battery capacity (mAh) | 3500 | 4230 | 4000 | 3000 |
| Removable battery | No | No | - | No |
| Wireless charging | No | No | - | No |
| Colours | Ambitious Black, Brave Blue, and Fiery Gold | Ocean Blue, Deep Black | Blue, Grey | Lake Blue, Gold, Rose Gold, Black |
| SAR value | 1.31 | - | - | - |
| Body type | - | Plastic | - | Plastic |
| Fast charging | - | - | Quick Charge 3.0 | - |
| display |
| Screen size (inches) | 6.30 | 6.20 | 6.18 | 5.45 |
| Touchscreen | Yes | Yes | Yes | Yes |
| Resolution | 1080x2340 pixels | 720x1520 pixels | 1080x2246 pixels | 720x1440 pixels |
| Protection type | Gorilla Glass | - | Gorilla Glass | - |
| Aspect ratio | 19.5:9 | 19:9 | 18.7:9 | 18:9 |
| Pixels per inch (PPI) | 409 | - | - | 295 |
| hardware |
| Processor | 2.1GHz octa-core | 1.8GHz octa-core | 2.8GHz octa-core | 2GHz octa-core (8x2GHz) |
| Processor make | MediaTek Helio P70 | Qualcomm Snapdragon 450 | Qualcomm Snapdragon 845 | MediaTek Helio P22 (MT6762) |
| RAM | 4GB | 2GB | 6GB | 3GB |
| Internal storage | 64GB | 16GB | 64GB | 32GB |
| Expandable storage | Yes | Yes | Yes | Yes |
| Expandable storage type | microSD | microSD | microSD | microSD |
| Expandable storage up to (GB) | 256 | 256 | 256 | 256 |
| Dedicated microSD slot | Yes | Yes | No | Yes |
| camera |
| Rear camera | 13-megapixel (f/2.2) + 2-megapixel (f/2.4) | 13-megapixel (f/2.2) + 2-megapixel | 12-megapixel (f/1.9, 1.4-micron) + 5-megapixel (f/2.0, 1.12-micron) | 12-megapixel (f/2.2, 1.25-micron) + 5-megapixel |
| Rear flash | LED | Yes | Yes | LED |
| Front camera | 25-megapixel (f/2.0) | 5-megapixel (f/2.2, 1.12-micron) | 20-megapixel | 5-megapixel (f/2.2, 1.12-micron) |
| Rear autofocus | - | Phase detection autofocus | - | Phase detection autofocus |
| Front flash | - | - | - | No |
| software |
| Operating system | Android 8.1 Oreo | Android 8.1 | Android 8.1 | Android 8.1 Oreo |
| Skin | ColorOS 5.2 | Color OS 5.1 | MIUI for Poco | MIUI 9.6 |
| connectivity |
| Wi-Fi | Yes | Yes | Yes | Yes |
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | - | - | 802.11 b/g/n |
| GPS | Yes | - | Yes | Yes |
| Bluetooth | Yes, v 4.20 | Yes | Yes, v 5.00 | Yes, v 4.20 |
| USB OTG | Yes | - | - | Yes |
| Micro-USB | Yes | - | - | Yes |
| Headphones | 3.5mm | - | 3.5mm | 3.5mm |
| FM | Yes | - | Yes | Yes |
| Number of SIMs | 2 | - | 2 | 2 |
| Active 4G on both SIM cards | Yes | - | - | Yes |
| Infrared | - | - | Yes | No |
| USB Type-C | - | - | Yes | No |
| NFC | - | - | - | No |
| sim 1 |
| SIM Type | Nano-SIM | - | Micro-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 | Yes | Yes | Yes |
| Fingerprint sensor | Yes | - | Yes | Yes |
| Compass/ Magnetometer | Yes | Yes | - | Yes |
| Proximity sensor | Yes | Yes | Yes | Yes |
| Accelerometer | Yes | Yes | Yes | Yes |
| Ambient light sensor | Yes | Yes | Yes | Yes |
| Gyroscope | Yes | - | - | No |
| 3D face recognition | - | - | - | No |