| Hardware and OS | Samsung W21 5G | |
| Operating system | Android v10 (Q) | |
| Processor | Octa-Core | |
| Chipset | Qualcomm Snapdragon 865 7nm | |
| Internal Storage | 512 GB | |
| GPU | Adreno 65 | |
| RAM | 12 GB | |
| Camera | Samsung W21 5G | other phones |
| Main camera | 12 MP 12 MP 12 MP | |
| Autofocus | Yes | |
| Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
| Flash | Yes, LED Flash | |
| Front camera | 10 MP | |
| Front camera resolution | 10 MP front-facing camera with f/2.2 aperture | |
| Video recording | Yes | |
| Connectivity | Samsung W21 5G | other phones |
| Bluetooth | Yes, v5.0 | |
| 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/b/g/n/n 5GHz, MIMO | |
| Multimedia | Samsung W21 5G | other phones |
| Audio jack | USB Type-C | |
| Loudspeaker | Yes | |
| Battery | Samsung W21 5G | other phones |
| Capacity | 4500 mAh | |
| Type | Lithium Polymer | |
| User replaceable | No | |
| Design | Samsung W21 5G | other phones |
| Colors | Gold | |
| Features | Samsung W21 5G | other phones |
| Fingerprint sensor position | Side | |
| Fingerprint sensor | Yes | |
| Other sensors | Light sensor, Proximity sensor, Accelerometer, Barometer, Compass, Gyroscope | |
