| Hardware and OS | TCL 20B | |
| Operating system | Android 11, TCL UI | |
| Processor | Octa-core 1.8 GHz Cortex-A53 | |
| Chipset | Mediatek MT6762 Helio P22 (12 nm) | |
| GPU | PowerVR GE8320 | |
| Internal memory | 64GB 4GB RAM | |
| External memory | microSDXC | |
| Display | TCL 20B | other phones |
| Type | IPS LCD | |
| Size | 6.52 inches, 102.6 cm2(~83.4% screen-to-body ratio) | |
| Resolution | 720 x 1600 pixels, 20:9 ratio | |
| Colors | Gray, Violet | |
| Design | TCL 20B | other phones |
| Body build | Glass front, plastic frame, plastic back | |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Dimensions | 164.7 x 74.7 x 8 mm (6.48 x 2.94 x 0.31 in) | |
| Weight | 178 g (6.28 oz) | |
| Connectivity | TCL 20B | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | |
| 4G Network | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 | |
| 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 | USB Type-C 2.0 | |
| Speed | HSPA 42.2/5.76 Mbps, LTE | |
| Technology | GSM / HSPA / LTE | |
| Main Camera | TCL 20B | other phones |
| Camera | 50 MP, (wide), PDAF
2 MP, f/2.4, (depth) | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps | |
| Selfie camera | TCL 20B | other phones |
| Camera | 8 MP | |
| Video | 1080p@30fps | |
| Multimedia | TCL 20B | other phones |
| Radio | Unspecified | |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Features | TCL 20B | other phones |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity | |
| Battery | TCL 20B | other phones |
| Type | Li-Po 4000 mAh, non-removable | |
| Charging | Fast charging 18W | |
