| Hardware and OS | Honor 20i | |
| Operating system | Android 9.0 (Pie); EMUI 9.1 | |
| Processor | Octa-core (4x2.2 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) | |
| Chipset | Hisilicon Kirin 710 (12 nm) | |
| Internal memory | 64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 256GB 6GB RAM | |
| External memory | microSDXC (uses shared SIM slot) | |
| GPU | Mali-G51 MP4 | |
| Display | Honor 20i | other phones |
| Size | 6.21 inches, 94.7 cm2 | |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio | |
| Type | IPS LCD capacitive touchscreen, 16M colors | |
| Main Camera | Honor 20i | other phones |
| Camera | 24 MP, f/1.8, PDAF
8 MP, f/2.4, 13mm (ultrawide)
2 MP, f/2.4, (depth) | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30/60fps | |
| Selfie camera | Honor 20i | other phones |
| Camera | 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8?m | |
| Features | HDR | |
| Video | 1080p@30fps | |
| Connectivity | Honor 20i | other phones |
| 2G Network | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | |
| Bluetooth | 4.2, A2DP, LE, aptX HD | |
| CDMA | CDMA 800 & TD-SCDMA | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | |
| Technology | GSM / CDMA / HSPA / LTE | |
| USB | microUSB 2.0, USB On-The-Go | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Multimedia | Honor 20i | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Radio | FM radio | |
| Battery | Honor 20i | other phones |
| Capacity | Non-removable Li-Po 3400 mAh battery | |
| Design | Honor 20i | other phones |
| Colors | Gradient Blue, Gradient red, Magic Night Black | |
| Dimensions | 154.8 x 73.6 x 8 mm (6.09 x 2.90 x 0.31 in) | |
| Weight | 164 g (5.78 oz) | |
| SIM | Hybrid Dual SIM (Nano-SIM, dual stand-by) | |
| Features | Honor 20i | other phones |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity, compass | |
