| Hardware and OS Umidigi A3S | UmiDIGI A3S | |
| Operating system | Android v10 (Q) | |
| Chipset | MediaTek Helio A22 | |
| Processor | Octa core, 2 GHz, Cortex A53 | |
| Graphics | PowerVR GE8300 | |
| RAM | 2 GB | |
| Internal Storage | 16 GB | |
| Expandable memory | Yes Up to 256 GB | |
| Display Umidigi A3S | UmiDIGI A3S | other phones |
| Type | IPS LCD | |
| Size | 5.7 inches | |
| Resolution | 720 x 1440 pixels | |
| Pixel Density | 282 ppi | |
| Touchscreen | Yes Capacitive Touchscreen, Multi-touch | |
| Aspect ratio | 18:9 | |
| Screen to body ratio calculated | 74.83 % | |
| Connectivity Umidigi A3S | UmiDIGI A3S | other phones |
| Network support | 4G , 3G, 2G | |
| WI-FI | Yes Wi-Fi 802.11, a/ac/b/g/n | |
| Gps | Yes with A-GPS, Glonass | |
| Bluetooth | Yes v5.0 | |
| Dual SIM | Dual SIM, GSM GSM, Dual VoLTE | |
| SIM size | SIM1: Nano, SIM2: Nano | |
| USB TYPE-C | No | |
| USB connectivity | Mass storage device, USB charging, microUSB | |
| Camera Umidigi A3S | UmiDIGI A3S | other phones |
| Main camera | 16 MP 5 MP | |
| Image | 4616 x 3464 Pixels | |
| Front camera | 13 MP | |
| Camera features | Digital Zoom, Auto Flash, Face detection | |
| Flash | Yes Dual LED Flash | |
| Autofocus | Yes | |
| Aperture | F2.0 | |
| Video recording | 1920x1080 @ 30 fps, 1280x720 @ 30 fps | |
| Design Umidigi A3S | UmiDIGI A3S | other phones |
| Height | 153.7 mm | |
| Width | 72.9 mm | |
| Thickness | 8.45 mm | |
| Weight | 197 grams | |
| Colours | Midnight Green, Space Grey | |
| Battery Umidigi A3S | UmiDIGI A3S | other phones |
| Capacity | 3950 mAh | |
| Type | Li-ion | |
| User replaceable | No | |
| Other Umidigi A3S | UmiDIGI A3S | other phones |
| Fingerprint sensor | Yes | |
| Fingerprint sensor position | Rear | |
| Other sensors | Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope | |
