| Hardware and OS Xiaomi Redmi A3x |
| Operating system: | Android 14, up to 2 major Android upgrades, MIUI |
| Processor: | Octa-core 1.8 GHz |
| Chipset: | Unisoc T603 (22 nm) |
| Internal memory: | 64GB 3GB RAM, 128GB 4GB RAM |
| External memory: | microSDXC (dedicated slot) |
| Display Xiaomi Redmi A3x |
| Type: | IPS LCD, 90Hz, 500 nits |
| Size: | 6.71 inches, 106.5 cm2 (~82.9% screen-to-body ratio) |
| Resolution: | 720 x 1650 pixels |
| Protection: | Corning Gorilla Glass 3 |
| Connectivity Xiaomi Redmi A3x |
| 2G Network: | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network: | HSDPA 850 / 900 / 2100 |
| 4G Network: | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 |
| WLAN: | Wi-Fi 802.11 b/g/n |
| Bluetooth: | 4.2, A2DP |
| NFC: | No |
| USB: | USB Type-C |
| Speed: | HSPA, LTE |
| Technology: | GSM / HSPA / LTE |
| Main Camera Xiaomi Redmi A3x |
| Camera: | 8 MP, f/2.0, (wide)
0.08 MP (auxiliary lens) |
| Features: | LED flash, HDR |
| Video: | 1080p@30fps |
| Selfie camera Xiaomi Redmi A3x |
| Camera: | 5 MP, f/2.2, (wide) |
| Features: | HDR |
| Video: | 1080p@30fps |
| Multimedia Xiaomi Redmi A3x |
| 3.5 mm Jack: | Yes |
| Loudspeaker: | Yes |
| Battery Xiaomi Redmi A3x |
| Type: | 5000 mAh, non-removable |
| Charging: | 10W wired |
| Design Xiaomi Redmi A3x |
| Body build: | Glass front (Gorilla Glass 3), glass back, plastic frame |
| SIM: | Dual SIM (Nano-SIM, dual stand-by) |
| Weight: | 193 g (6.81 oz) |
| Dimensions: | 168.4 x 76.3 x 8.3 mm (6.63 x 3.00 x 0.33 in) |
| Colors: | Midnight Black, Moonlight White (Starry White), Aurora Green (Ocean Green), Olive Green |
| Features Xiaomi Redmi A3x |
| Sensors: | Fingerprint (side-mounted), accelerometer, compass |