| Hardware and OS | Realme C3i | |
| Operating system | Android 10, Realme UI | |
| Processor | Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55) | |
| Chipset | Mediatek Helio G70 (12 nm) | |
| Internal memory | 32GB 2GB RAM | |
| External memory | microSDXC (dedicated slot) | |
| GPU | Mali-G52 2EEMC2 | |
| Display | Realme C3i | other phones |
| Size | 6.5 inches, 102.0 cm2 | |
| Resolution | 720 x 1600 pixels, 20:9 ratio | |
| Type | IPS LCD, 480 nits (typ) | |
| Protection | Corning Gorilla Glass 3 | |
| Main Camera | Realme C3i | other phones |
| Camera | 12 MP, f/1.8, 28mm (wide), 1/2.8", 1.25µm, PDAF
2 MP, f/2.4, (depth) | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps, 720p@120fps | |
| Selfie camera | Realme C3i | other phones |
| Camera | 5 MP, f/2.4, 27mm (wide), 1/5", 1.12µm | |
| Features | HDR, panorama | |
| Video | 1080p@30fps | |
| Connectivity | Realme C3i | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | 1, 3, 5, 8, 38, 40, 41 | |
| Bluetooth | 5.0, A2DP, LE, aptX | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| NFC | No | |
| Speed | HSPA 42.2/11.5 Mbps, LTE-A (2CA) Cat6 300/75 Mbps | |
| Technology | GSM / HSPA / LTE | |
| USB | microUSB 2.0, USB On-The-Go | |
| WLAN | Wi-Fi 802.11 b/g/n, hotspot | |
| Multimedia | Realme C3i | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Radio | FM radio | |
| Battery | Realme C3i | other phones |
| Type | Li-Po 5000 mAh, non-removable | |
| Charging | Charging 10W | |
| Design | Realme C3i | other phones |
| Body build | Glass front (Gorilla Glass 3), plastic back, plastic frame | |
| Body | Weather-sealed ports & loudspeaker | |
| Colors | Frozen Blue, Blazing Red | |
| Dimensions | 164.4 x 75 x 9 mm (6.47 x 2.95 x 0.35 in) | |
| Weight | 195 g (6.88 oz) | |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Features | Realme C3i | other phones |
| Sensors | Accelerometer, proximity, compass | |
