| 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 | 6.50-inch | 6.41-inch |
| Front Camera | 32-megapixel | 16-megapixel |
| Rear Camera | 48-megapixel + 12-megapixel + 5-megapixel + 5-megapixel | 16-megapixel + 20-megapixel |
| RAM | 6GB | 8GB |
| Storage | 128GB | 128GB |
| Battery Capacity | 4000mAh | 3700mAh |
| OS | Android 10 | Android 9.0 |
| Resolution | 1080x2400 pixels | 1080x2340 pixels |
| Processor | - | Qualcomm Snapdragon 845 |
| general |
| Brand | Samsung | OnePlus |
| Model | Galaxy A51 | 6T |
| Release date | January 1, 2020 | October 1, 2018 |
| Launched in India | Yes | - |
| Form factor | Touchscreen | Touchscreen |
| Dimensions (mm) | 158.50 x 73.60 x 7.90 | 157.50 x 74.80 x 8.20 |
| Weight (g) | 172.00 | 185.00 |
| Battery capacity (mAh) | 4000 | 3700 |
| Fast charging | Proprietary | Proprietary |
| Colours | Prism Crush Blue, Prism Crush Black, Prism Crush Pink, Prism Crush White | Midnight Black, Mirror Black |
| Body type | - | Glass |
| Removable battery | - | No |
| Wireless charging | - | No |
| display |
| Screen size (inches) | 6.50 | 6.41 |
| Touchscreen | Yes | Yes |
| Resolution | 1080x2400 pixels | 1080x2340 pixels |
| Protection type | - | Gorilla Glass |
| Aspect ratio | - | 19.5:9 |
| hardware |
| Processor make | Samsung Exynos 9611 | Qualcomm Snapdragon 845 |
| RAM | 6GB | 8GB |
| Internal storage | 128GB | 128GB |
| Expandable storage | Yes | No |
| Expandable storage type | microSD | - |
| Expandable storage up to (GB) | 512 | - |
| Dedicated microSD slot | Yes | - |
| Processor | - | octa-core (4x2.8GHz) |
| camera |
| Rear camera | 48-megapixel (f/2.0) + 12-megapixel (f/2.2) + 5-megapixel (f/2.2) + 5-megapixel (f/2.4) | 16-megapixel (f/1.7, 1.22-micron) + 20-megapixel (f/1.7, 1-micron) |
| Front camera | 32-megapixel (f/2.2) | 16-megapixel (f/2.0, 1-micron) |
| Rear autofocus | - | Phase detection autofocus |
| Rear flash | - | Dual LED |
| Front flash | - | No |
| software |
| Operating system | Android 10 | Android 9.0 |
| Skin | One UI 2.0 | OxygenOS |
| connectivity |
| Wi-Fi | Yes | Yes |
| Wi-Fi standards supported | 802.11 ac | 802.11 a/b/g/n/ac |
| GPS | Yes | Yes |
| Bluetooth | Yes, v 5.00 | Yes, v 5.00 |
| NFC | Yes | Yes |
| USB OTG | Yes | Yes |
| USB Type-C | Yes | Yes |
| Headphones | 3.5mm | Type-C |
| FM | Yes | - |
| Number of SIMs | 2 | 2 |
| Wi-Fi Direct | Yes | - |
| Active 4G on both SIM cards | Yes | Yes |
| sim 1 |
| SIM Type | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM |
| 3G | Yes | Yes |
| 4G/ LTE | Yes | Yes |
| sim 2 |
| SIM Type | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM |
| 3G | Yes | Yes |
| 4G/ LTE | Yes | Yes |
| sensors |
| Face unlock | Yes | Yes |
| Fingerprint sensor | Yes | Yes |
| In-Display Fingerprint Sensor | Yes | - |
| Compass/ Magnetometer | Yes | Yes |
| Proximity sensor | Yes | Yes |
| Accelerometer | Yes | Yes |
| Ambient light sensor | Yes | Yes |
| Gyroscope | Yes | Yes |