| Hardware and OS | Samsung Galaxy S21 FE | |
| Operating system | Android v11 (Q) | |
| Processor | Octa-core (2x2.2 GHz Cortex-A77 & 6x1.8 GHz Cortex A55) | |
| Chipset | Exynos 990 - 7 nm | |
| Internal Storage | 128 GB | |
| Expandable memory | Yes | |
| GPU | Mali-G76 MP5 | |
| RAM | 8 GB | |
| Camera | Samsung Galaxy S21 FE | other phones |
| Main camera | 64 MP 12 MP 5 MP 5 MP | |
| Autofocus | Yes | |
| Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
| Flash | Yes, LED Flash | |
| Front camera | 32 MP | |
| Front camera resolution | 32 MP (Ultra-wide), f/2.2 | |
| Video recording | Yes | |
| Connectivity | Samsung Galaxy S21 FE | other phones |
| Bluetooth | Yes, v5.1 | |
| SIM size | SIM1: Nano, SIM2: Nano | |
| Dual SIM | Dual SIM, GSM GSM | |
| GPS | Yes, with A-GPS, Glonass | |
| Network support | 5G , 4G , 3G, 2G | |
| USB connectivity | Mass storage device, USB charging | |
| WI-FI | Yes, Wi-Fi 802.11, a/ac/ax/b/g/n/n 5GHz, MIMO | |
| Multimedia | Samsung Galaxy S21 FE | other phones |
| Audio jack | 3.5 MM | |
| Loudspeaker | Yes | |
| Battery | Samsung Galaxy S21 FE | other phones |
| Capacity | 4500 mAh | |
| Type | Lithium Polymer | |
| User replaceable | No | |
| Design | Samsung Galaxy S21 FE | other phones |
| Colors | Blue | |
| Height | 162.5 mm | |
| Width | 75.5 mm | |
| Thickness | 8.1 mm | |
| Weight | 185 grams | |
| Features | Samsung Galaxy S21 FE | other phones |
| Fingerprint sensor position | On-Screen | |
| Fingerprint sensor | Yes | |
| Other sensors | Accelerometer, Gyro, Proximity, Compass | |
