| Hardware and OS | TCL A3 | |
| Operating system | Android 11 | |
| Processor | Octa-core 2.0 GHz Cortex-A53 | |
| Chipset | Mediatek MT6762 Helio P22 (12 nm) | |
| GPU | PowerVR GE8320 | |
| Internal memory | 32GB 3GB RAM | |
| External memory | microSDXC (dedicated slot) | |
| Display | TCL A3 | other phones |
| Type | TFT LCD | |
| Size | 5.5 inches, 78.1 cm2(~75.3% screen-to-body ratio) | |
| Resolution | 720 x 1440 pixels, 18:9 ratio | |
| Colors | Black | |
| Design | TCL A3 | other phones |
| SIM | Single SIM (Nano-SIM) | |
| Dimensions | 145.8 x 71.1 x 9.9 mm (5.74 x 2.80 x 0.39 in) | |
| Weight | 171 g (6.03 oz) | |
| Connectivity | TCL A3 | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | |
| 3G Network | HSDPA 850 / 1700(AWS) / 1900 | |
| 4G Network | 2, 4, 5, 13, 66 | |
| WLAN | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | |
| Bluetooth | 5.0, A2DP, LE | |
| GPS | Yes, with A-GPS | |
| NFC | No | |
| USB | microUSB 2.0 | |
| CDMA | CDMA 800 / 1900 | |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | |
| Technology | GSM / CDMA / HSPA / LTE | |
| Main Camera | TCL A3 | other phones |
| Camera | 8 MP, 1/4", 1.12?m | |
| Features | LED flash | |
| Video | 1080p@30fps | |
| Selfie camera | TCL A3 | other phones |
| Camera | 5 MP, 1/5", 1.12?m | |
| Video | 1080p@30fps | |
| Multimedia | TCL A3 | other phones |
| Radio | Unspecified | |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Features | TCL A3 | other phones |
| Sensors | Accelerometer, proximity | |
| Battery | TCL A3 | other phones |
| Type | Li-Ion 3000 mAh, non-removable | |
