| Hardware and OS | Oppo Realme V21 | vivo Y11 |
| Operating system | Android 12, Realme UI 3.0 | Android 4.4.4 (KitKat) |
| Processor | Octa-core 2.2 GHz | Quad-core 1.3 GHz Cortex-A7 |
| Chipset | | Mediatek MT6582М |
| GPU | | Mali-400MP2 |
| Internal memory | 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM | 4 GB, 512 MB RAM |
| External memory | microSDXC | microSD, up to 256 GB (dedicated slot) |
| Display | Oppo Realme V21 | vivo Y11 |
| Type | TFT | IPS LCD |
| Size | 6.56" inc | 4" inc |
| Display colors | 16M | |
| Resolution | 720 x 1612 px | 480 x 800 px |
| Screen area | 103.4 cm2 | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen format | 20:9 (height:width) | |
| Screen-to-Body Ratio | | 59.2% |
| Screen to body ratio | % | |
| Display area | | 45.5 cm2 |
| PPI /points per inch/ | 269 PPI | |
| Display aspect ratio | | 5:3 (height:width) |
| Pixel Density | | 233 PPI |
| Colors | | 16M |
| Connectivity | Oppo Realme V21 | vivo Y11 |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| NFC | No | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| Network | GSM / CDMA / HSPA / LTE | GSM / HSPA |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Micro-SIM, dual stand-by) |
| Bluetooth | 5.0, A2DP, LE, aptX HD | 4.0, A2DP, EDR |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS | Yes, with A-GPS |
| Speed | | HSPA 21.1/7.2 Mbps |
| USB | USB Type-C 2.0, USB On-The-Go | microUSB 2.0, USB Host |
| Camera | Oppo Realme V21 | vivo Y11 |
| Rear camera, main | 13 MP, Dual | |
| Camera specs | 13 MP, f/2.2, 26mm (wide), 1/3.06'', 1.12µm, PDAF
-2 MP, f/2.4, (depth) | |
| Main camera | | 5 MP, Single |
| Functions | LED flash, HDR, panorama | |
| Specs | | 5 MP, AF |
| Features | | LED flash |
| Front camera, selfie | 8 MP, Single | |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera | | 2 MP, Single |
| Specifications | 8 MP, f/2.0, (wide) | |
| Multimedia | Oppo Realme V21 | vivo Y11 |
| 3.5 mm Jack | | Yes |
| Headphone jack | Yes | |
| Radio | No | FM radio |
| Design | Oppo Realme V21 | vivo Y11 |
| Colors | Black, Blue | White, Black |
| Dimensions (HxWxD) | xx mm | 0 x 0 x 0 in | |
| Dimensions | | 123 x 62.5 x 8.8 mm |
| Weight | 0 g | 0 oz | 124 g |
| Battery | Oppo Realme V21 | vivo Y11 |
| Battery capacity | | 1700 mAh, Removable Li-Po |
| Battery | 5000 mAh, Li-Po, non-removable | |
| Battery life | | Talking time- Up to 11 h (2G) / Up to 8 h (3G)
Music play - Up to 34 h |
| Other features | Oppo Realme V21 | vivo Y11 |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass | |
| Other | Oppo Realme V21 | vivo Y11 |
| Release date | | 2014, Q4 |
| Sensors | | Accelerometer, proximity , Infrared port |
