| Hardware and OS Samsung Galaxy S21 Plus |
| Operating system: | Android v11 |
| Processor: | Samsung Exynos 2100 |
| RAM: | 8 GB |
| Internal Storage: | 128 GB |
| Custom UI: | Samsung One UI |
| Display Samsung Galaxy S21 Plus |
| Type: | Dynamic AMOLED |
| Size: | 6.7 inches |
| Resolution: | 1080 x 2400 Pixels |
| Pixel Density: | 393 ppi |
| Touchscreen: | Yes, Capacitive Touchscreen, Multi-touch |
| Protection: | Corning Gorilla Glass |
| Aspect ratio: | 20:9 |
| Refresh rate: | 120 Hz |
| Screen to body ratio calculated: | 88.77 % |
| Connectivity Samsung Galaxy S21 Plus |
| Network support: | 5G , 4G , 3G, 2G |
| WI-FI: | Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz |
| Gps: | Yes, with A-GPS, Glonass |
| Bluetooth: | Yes, v5.1 |
| NFC: | Yes |
| Dual SIM: | Dual SIM, GSM GSM |
| SIM size: | SIM1: Nano, SIM2: Nano |
| USB TYPE-C: | Yes |
| USB connectivity: | Mass storage device, USB charging |
| Wireless Charging: | Yes |
| Camera Samsung Galaxy S21 Plus |
| Image: | 4000 x 3000 Pixels |
| Front camera resolution: | 10 MP f/2.2, Wide Angle Primary Camera |
| Camera features: | Digital Zoom, Auto Flash, Face detection, Touch to focus |
| Flash: | Yes, LED Flash |
| Autofocus: | Yes, Phase Detection autofocus, Dual Pixel autofocus |
| Aperture: | F2.2 |
| Optical image stabilisation: | Yes |
| Video recording: | 3840x2160 @ 30 fps |
| Multimedia Samsung Galaxy S21 Plus |
| Audio jack: | USB Type-C |
| Loudspeaker: | Yes |
| Design Samsung Galaxy S21 Plus |
| Height: | 161.4 mm |
| Width: | 75.6 mm |
| Thickness: | 7.8 mm |
| Weight: | 202 grams |
| Colours: | Phantom Silver, Phantom Black, Phantom Violet |
| Ruggedness: | Dust Proof |
| Waterproof: | Yes, Water resistant (up to 30 minutes in a depth of 1.5 meter), IP68 |
| Battery Samsung Galaxy S21 Plus |
| Capacity: | 4800 mAh |
| Type: | Lithium-ion |
| User replaceable: | No |
| Quick charging: | Yes, Fast, 25W |
| Other Samsung Galaxy S21 Plus |
| Fingerprint sensor: | Yes |
| Fingerprint sensor position: | On-Screen |
| Other sensors: | Accelerometer, Gyro, Proximity, Compass, Barometer |