| Hardware and OS | Xiaomi Mi A3 | |
| Operating system | Android 9.0 (Pie); Android One | |
| Processor | Octa-core (2x2.0 GHz Kryo 260 Gold & 6x1.8 GHz Kryo 260 Silver) | |
| Chipset | Qualcomm SDM665 Snapdragon 665 (11 nm) | |
| GPU | Adreno 610 | |
| Internal memory | 64/128 GB, 4 GB RAM | |
| External memory | microSD, up to 256 GB (uses shared SIM slot) | |
| Display | Xiaomi Mi A3 | other phones |
| Type | Super AMOLED | |
| Size | 6.01" inc | |
| Resolution | 720 x 1560 px | |
| Protection | Corning Gorilla Glass 5 | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 80.3% | |
| Display area | 88.7 cm2 | |
| Display aspect ratio | 19.5:9 (height:width) | |
| Pixel Density | 286 PPI | |
| Colors | 16M | |
| Connectivity | Xiaomi Mi A3 | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1700 / 1900 / 2100 | |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 40(2300) - SIM 1 & SIM 2 | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 5.0, A2DP, LE, aptX HD | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) 450/50 Mbps | |
| USB | 2.0, Type-C 1.0 reversible connector | |
| Camera | Xiaomi Mi A3 | other phones |
| Main camera | 48 MP, Triple | |
| Specs | 48 MP, f/1.8, (wide), 1/2', 0.8µm, PDAF
-8 MP, (ultrawide), f/2.2, 1.12µm
-2 MP, f/2.4, depth sensor | |
| Features | LED flash, HDR, panorama | |
| Video | 2160p@30fps, 1080p@30/60/120fps | |
| Selfie camera | 32 MP, Single | |
| Multimedia | Xiaomi Mi A3 | other phones |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design | Xiaomi Mi A3 | other phones |
| Colors | Kind of Gray, Not just Blue, More than White | |
| Body build | Back glass (Gorilla Glass 5), aluminum frame | |
| Dimensions | 153.5 x 71.9 x 8.5 mm | |
| Weight | 173.8 g | |
| Battery | Xiaomi Mi A3 | other phones |
| Battery capacity | 4030 mAh, Non-removable Li-Po | |
| Other | Xiaomi Mi A3 | other phones |
| Release date | 2019, July | |
| Sensors | Fingerprint (under display), accelerometer, gyro, proximity, compass , Infrared port | |
