| Brand | Realme |
| Network | 4G LTE |
| Sim Type | Nano-SIM |
| Port Type | micro USB |
| Display Type | IPS LCD |
| Charging Type | Wired |
| Number of Sim | Dual-SIM |
| Memory Card Slot | Yes |
| Display Resolution | 720x1600 |
| Operating System Type | Android 10 |
| Model Name | C21 |
| Dimensions | 165.2 x 76.4 x 8.9 mm |
| Connectivity | Wi-Fi, Bluetooth 5, GPS, FM radio, microUSB 2, OTG |
| Chipset Manufacturer | MediaTek |
| Video Capture Format | 1080p@30fps |
| Processor Manufacturer | MediaTek |
| Screen Size | 6.5 Inch |
| Front Camera | 5 megapixels |
| Primary Camera | 13 megapixels |
| Battery Capacity | 5000 mAh |
Brand: Realme
Model: C21
Display: 6.5-inch (720x1600) HD+ Mini-drop Fullscreen IPS LCD
Rear Camera:
Front Camera:
-5 MP, f/2.2, (wide), 1/5", 1.12µm
Processor: Mediatek MT6765G Helio G35 (12 nm) octa-core
Battery Capacity: 5000mAh with 10W reverse charging
Connectivity: Wi-Fi, Bluetooth 5, GPS, FM radio, microUSB 2, OTG