| Name | Realme V21 |
| Brand | Realme |
| Model | V21 |
| Category | Smartphone |
| Network Type | GSM / CDMA / HSPA / LTE |
| Network 2G | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Network 3G | HSDPA 850 / 900 / 2100 |
| Network 4G | LTE |
| Speed | HSPA, LTE-A |
| GPRS | Yes |
| EDGE | Yes |
| Launch Announcement | Not Announced Yet |
| Launch Date | Coming Soon |
| Network Sim | Dual SIM (Nano-SIM, Dual stand-by) |
| Display Type | TFT |
| Display Size | 6.56 inches |
| Display Resolution | 720 x 1612 pixels, 20:9 ratio |
| Display Multitouch | Yes |
| Display Density | 269 ppi |
| Operating System | Android |
| OS Version | 12 |
| User Interface (ui) | Realme UI 3.0 |
| CPU | Octa-core 2.2 GHz |
| Memory Internal | 128 GB |
| Memory External | microSDXC |
| Ram | 4 GB, 6 GB, 8 GB |
| Primary Camera | Dual: 13 MP, (wide) |
| 2 MP, (depth) | |
| Secondary Camera | 8 MP |
| Camera Features | LED Flash, Panorama, HDR |
| Video | 1080p@30fps |
| Audio | Yes |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| WiFi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Hotspot |
| Bluetooth | 5.0, A2DP, LE, aptX HD |
| USB | USB Type-C 2.0, USB On-The-Go |
| Fm Radio | No |
| GPS | Yes with A-GPS |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass |
| Messaging | Yes |
| Battery Type | Non-removable Li-Po Battery |
| Battery Capacity | 5000 mAh |
| Body Color | Black, Blue |