| 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 | 6.70-inch | 6.80-inch | 
| Processor | Qualcomm Snapdragon 888 | Samsung Exynos 2100 | 
| Front Camera | 16-megapixel | 40-megapixel | 
| Rear Camera | 48-megapixel + 50-megapixel + 8-megapixel | 108-megapixel + 12-megapixel + 10-megapixel + 10-megapixel | 
| RAM | 8GB, 12GB | 12GB, 16GB | 
| Storage | 128GB, 256GB | 128GB, 256GB, 512GB | 
| Battery Capacity | 4500mAh | 5000mAh | 
| OS | Android 11 | Android 11 | 
| Resolution | 1440x3216 pixels | 1440x3220 pixels | 
| general | 
| Brand | OnePlus | Samsung | 
| Model | 9 Pro | Galaxy S21 Ultra | 
| Release date | March 23, 2021 | January 14, 2021 | 
| Launched in India | Yes | - | 
| Form factor | Touchscreen | Touchscreen | 
| Dimensions (mm) | 163.20 x 73.60 x 8.70 | 165.10 x 75.60 x 8.90 | 
| Weight (g) | 197.00 | 228.00 | 
| Battery capacity (mAh) | 4500 | 5000 | 
| Removable battery | No | - | 
| Fast charging | Proprietary | Proprietary | 
| Colours | Astral Black, Morning Mist, Pine Green | Phantom Titanium, Phantom Navy, Phantom Brown | 
| IP rating | - | IP68 | 
| Wireless charging | - | Yes | 
| display | 
| Screen size (inches) | 6.70 | 6.80 | 
| Touchscreen | Yes | Yes | 
| Resolution | 1440x3216 pixels | 1440x3220 pixels | 
| Protection type | Gorilla Glass | Gorilla Glass | 
| Pixels per inch (PPI) | 525 | 515 | 
| hardware | 
| Processor | octa-core | 2.2GHz octa-core (3x2.8GHz + 4x2.2GHz + 1x2.9GHz) | 
| Processor make | Qualcomm Snapdragon 888 | Samsung Exynos 2100 | 
| RAM | 8GB, 12GB | 12GB, 16GB | 
| Internal storage | 128GB, 256GB | 128GB, 256GB, 512GB | 
| camera | 
| Rear camera | 48-megapixel (f/1.8, 1.12-micron) + 50-megapixel (f/2.2) + 8-megapixel (f/2.4, 1.0-micron) | 108-megapixel (f/1.8, 0.8-micron) + 12-megapixel (f/2.2, 1.4-micron) + 10-megapixel (f/2.4, 1.22-micron) + 10-megapixel (f/4.9, 1.22-micron) | 
| No. of Rear Cameras | 4 | - | 
| Rear autofocus | Yes | Laser autofocus | 
| Rear flash | Yes | Yes | 
| Front camera | 16-megapixel (f/2.4, 1.0-micron) | 40-megapixel (f/2.2, 0.7-micron) | 
| No. of Front Cameras | 1 | - | 
| software | 
| Operating system | Android 11 | Android 11 | 
| Skin | Oxygen OS 11 | One UI 3.1 | 
| connectivity | 
| Wi-Fi | Yes | Yes | 
| Wi-Fi standards supported | 802.11 a/b/g/n/ac/ax | 802.11 a/b/g/n/ac/ax | 
| GPS | Yes | Yes | 
| Bluetooth | Yes, v 5.20 | Yes, v 5.00 | 
| NFC | Yes | Yes | 
| USB Type-C | Yes | Yes | 
| Number of SIMs | 2 | 2 | 
| sim 1 | 
| SIM Type | Nano-SIM | Nano-SIM | 
| GSM/CDMA | GSM | GSM | 
| 3G | Yes | Yes | 
| 4G/ LTE | Yes | Yes | 
| 5G | Yes | Yes | 
| sim 2 | 
| SIM Type | Nano-SIM | Nano-SIM | 
| GSM/CDMA | GSM | GSM | 
| 3G | Yes | Yes | 
| 4G/ LTE | Yes | Yes | 
| 5G | - | Yes | 
| sensors | 
| In-Display Fingerprint Sensor | Yes | Yes | 
| Compass/ Magnetometer | Yes | Yes | 
| Proximity sensor | Yes | Yes | 
| Accelerometer | Yes | Yes | 
| Ambient light sensor | Yes | Yes | 
| Gyroscope | Yes | Yes | 
| Face unlock | - | Yes | 
| Barometer | - | Yes |