| Hardware and OS | Xiaomi J18s | |
| Operating system | Android v11 | |
| RAM | 12 GB | |
| Internal Storage | 256 GB | |
| Display | Xiaomi J18s | other phones |
| Type | Foldable AMOLED | |
| Size | 8.01 inches | |
| Resolution | 1860 x 2480 Pixels | |
| Pixel Density | 388 ppi | |
| Touchscreen | Yes, Capacitive Touchscreen, Multi-touch | |
| Connectivity | Xiaomi J18s | other phones |
| Network support | 5G , 4G , 3G, 2G | |
| WI-FI | Yes, Wi-Fi 802.11, b/g/n | |
| Gps | Yes, with A-GPS, Glonass | |
| Bluetooth | Yes, v5.2 | |
| NFC | Yes | |
| Dual SIM | Dual SIM, GSM GSM | |
| SIM size | SIM1: Nano, SIM2: Nano | |
| USB connectivity | Mass storage device, USB charging | |
| Camera | Xiaomi J18s | other phones |
| Main camera | 108 MP 8 MP 13 MP | |
| Front camera | 20 MP | |
| Front camera resolution | 20 MP (wide) | |
| Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
| Flash | Yes, LED Flash | |
| Autofocus | Yes | |
| Video recording | Yes | |
| Multimedia | Xiaomi J18s | other phones |
| Loudspeaker | Yes | |
| Design | Xiaomi J18s | other phones |
| Colours | Black | |
| Battery | Xiaomi J18s | other phones |
| Capacity | 5020 mAh | |
| Type | Li-Polymer | |
| Other | Xiaomi J18s | other phones |
| Fingerprint sensor | Yes | |
| Fingerprint sensor position | Side | |
| Other sensors | Accelerometer, Gyro, Proximity, Compass, Color Spectrum, Barometer | |
