| 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 | 5.40-inch | 6.43-inch | 6.43-inch | 6.20-inch |
| Processor | Apple A15 Bionic | MediaTek Dimensity 1200 | - | Samsung Exynos 2100 |
| Front Camera | 12-megapixel | 32-megapixel | 32-megapixel | 10-megapixel |
| Rear Camera | 12-megapixel + 12-megapixel | 50-megapixel + 8-megapixel + 2-megapixel | 64-megapixel + 8-megapixel + 2-megapixel | 12-megapixel + 12-megapixel + 64-megapixel |
| Storage | 128GB, 256GB, 512GB | 128GB, 256GB | 128GB | 128GB, 256GB |
| OS | iOS 15 | Android 11 | Android 11 | Android 11 |
| Resolution | 1080x2340 pixels | 1080x2400 pixels | 1080x2400 pixels | 1080x2400 pixels |
| RAM | - | 6GB, 8GB, 12GB | 8GB | 8GB |
| Battery Capacity | - | 4500mAh | 4300mAh | 4000mAh |
| general |
| Brand | Apple | OnePlus | Oppo | Samsung |
| Model | iPhone 13 mini | Nord 2 | Reno 6 | Galaxy S21 |
| Release date | September 14, 2021 | July 22, 2021 | May 27, 2021 | January 14, 2021 |
| Launched in India | Yes | Yes | Yes | - |
| Form factor | Touchscreen | Touchscreen | - | Touchscreen |
| Dimensions (mm) | 131.50 x 64.20 x 7.65 | 158.90 x 73.20 x 8.25 | 156.80 x 72.10 x 7.59 | 151.70 x 71.20 x 7.90 |
| Weight (g) | 141.00 | 189.00 | 182.00 | 171.00 |
| IP rating | IP68 | - | - | IP68 |
| Fast charging | Proprietary | Proprietary | Proprietary | Proprietary |
| Wireless charging | Yes | - | - | Yes |
| Colours | Starlight, Midnight, Blue, Pink, (PRODUCT)RED | Blue Haze, Gray Sierra, Green Wood, Pac-Man Edition | Aurora, Stellar Black | Phantom Violet |
| Battery capacity (mAh) | - | 4500 | 4300 | 4000 |
| display |
| Screen size (inches) | 5.40 | 6.43 | 6.43 | 6.20 |
| Touchscreen | Yes | Yes | Yes | Yes |
| Resolution | 1080x2340 pixels | 1080x2400 pixels | 1080x2400 pixels | 1080x2400 pixels |
| Pixels per inch (PPI) | 476 | 410 | - | 421 |
| Refresh Rate | - | 90 Hz | - | - |
| Aspect ratio | - | 20:9 | 20:9 | 20:9 |
| Protection type | - | - | Gorilla Glass | Gorilla Glass |
| hardware |
| Processor | hexa-core | octa-core | - | 2.2GHz octa-core (3x2.8GHz + 4x2.2GHz + 1x2.9GHz) |
| Processor make | Apple A15 Bionic | MediaTek Dimensity 1200 | MediaTek Dimensity 900 | Samsung Exynos 2100 |
| Internal storage | 128GB, 256GB, 512GB | 128GB, 256GB | 128GB | 128GB, 256GB |
| RAM | - | 6GB, 8GB, 12GB | 8GB | 8GB |
| camera |
| Rear camera | 12-megapixel (f/1.6) + 12-megapixel (f/2.4) | 50-megapixel (f/1.88, 1.0-micron) + 8-megapixel (f/2.25) + 2-megapixel (f/2.5) | 64-megapixel (f/1.7, 0.70-micron) + 8-megapixel (f/2.2, 1.12-micron) + 2-megapixel (f/2.4, 1.75-micron) | 12-megapixel (f/1.8, 1.8-micron) + 12-megapixel (f/2.2, 1.4-micron) + 64-megapixel (f/2.0, 0.8-micron) |
| No. of Rear Cameras | 2 | 3 | 3 | 3 |
| Rear autofocus | Yes | Yes | Yes | Yes |
| Rear flash | Yes | Yes | Yes | Yes |
| Front camera | 12-megapixel (f/2.2) | 32-megapixel (f/2.45, 0.8-micron) | 32-megapixel (f/2.4, 0.8-micron) | 10-megapixel (f/2.2, 1.22-micron) |
| No. of Front Cameras | 1 | 1 | 1 | 1 |
| software |
| Operating system | iOS 15 | Android 11 | Android 11 | Android 11 |
| Skin | - | OxygenOS 11.3 | ColorOS 11.3 | One UI 3.1 |
| connectivity |
| Wi-Fi | Yes | Yes | Yes | Yes |
| Wi-Fi standards supported | 802.11 a/b/g/n/ac/ax | 802.11 a/b/g/n/ac/ax | - | 802.11 a/b/g/n/ac/ax |
| GPS | Yes | Yes | Yes | Yes |
| Bluetooth | Yes, v 5.00 | Yes, v 5.20 | Yes, v 5.20 | Yes, v 5.00 |
| NFC | Yes | Yes | - | Yes |
| Lightning | Yes | - | - | - |
| Number of SIMs | 2 | 2 | 2 | 2 |
| USB Type-C | - | Yes | Yes | Yes |
| sim 1 |
| SIM Type | Nano-SIM | Nano-SIM | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM | GSM | GSM |
| 3G | Yes | Yes | Yes | Yes |
| 4G/ LTE | Yes | Yes | Yes | Yes |
| 5G | Yes | Yes | Yes | Yes |
| sim 2 |
| SIM Type | eSIM | Nano-SIM | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM | GSM | GSM |
| 3G | Yes | Yes | - | Yes |
| 4G/ LTE | Yes | Yes | Yes | Yes |
| 5G | - | Yes | - | Yes |
| sensors |
| 3D face recognition | 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 | Yes | Yes |
| Barometer | Yes | - | - | Yes |
| Face unlock | - | Yes | - | Yes |
| In-Display Fingerprint Sensor | - | Yes | Yes | Yes |