| Hardware and OS | Oppo Realme C20 | vivo Y11 |
| Operating system | Android 10, realme UI 1.0 | Android 4.4.4 (KitKat) |
| Processor | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) | Quad-core 1.3 GHz Cortex-A7 |
| Chipset | MediaTek Helio G35 (12 nm) | Mediatek MT6582М |
| GPU | PowerVR GE8320 | Mali-400MP2 |
| Internal memory | 32GB 2GB RAM | 4 GB, 512 MB RAM |
| External memory | microSDXC (dedicated slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Oppo Realme C20 | vivo Y11 |
| Type | IPS LCD | IPS LCD |
| Size | 6.5" inc | 4" inc |
| Resolution | 720 x 1600 px | 480 x 800 px |
| Touchscreen | capacitve touchscreen | capacitive touchscreen |
| Display colors | 16M | |
| Screen-to-Body Ratio | | 59.2% |
| Screen area | 102.0 cm2 | |
| Display area | | 45.5 cm2 |
| Screen format | 20:9 (height:width) | |
| Display aspect ratio | | 5:3 (height:width) |
| Screen to body ratio | 80.8% | |
| Pixel Density | | 233 PPI |
| PPI /points per inch/ | 270 PPI | |
| Colors | | 16M |
| Screen protection | Corning Gorilla Glass 3 | |
| Connectivity | Oppo Realme C20 | vivo Y11 |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 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 / HSPA / LTE | GSM / HSPA |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Micro-SIM, dual stand-by) |
| NFC | No | |
| Bluetooth | 5.1, A2DP, LE | 4.0, A2DP, EDR |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Speed | | HSPA 21.1/7.2 Mbps |
| USB | microUSB 2.0, USB On-The-Go | microUSB 2.0, USB Host |
| Camera | Oppo Realme C20 | vivo Y11 |
| Main camera | | 5 MP, Single |
| Specs | | 5 MP, AF |
| Rear camera, main | 8 MP, Single | |
| Features | | LED flash |
| Camera specs | 8 MP, f/2.0, (wide), 1/4.0'', 1.12µm, AF | |
| Video | 1080p@30fps | 1080p@30fps |
| Functions | LED flash, HDR, panorama | |
| Selfie camera | | 2 MP, Single |
| Front camera, selfie | 5 MP, Single | |
| Specifications | 5 MP, f/2.2, (wide), 1/5.0'', 1.12µm | |
| Multimedia | Oppo Realme C20 | vivo Y11 |
| 3.5 mm Jack | | Yes |
| Radio | FM radio | FM radio |
| Headphone jack | Yes | |
| Design | Oppo Realme C20 | vivo Y11 |
| Colors | Black, Blue | White, Black |
| Dimensions | | 123 x 62.5 x 8.8 mm |
| Weight | 190 g | 6.7 oz | 124 g |
| Dimensions (HxWxD) | 165.2 x 76.4 x 8.9 mm | 6.5 x 3.01 x 0.35 in | |
| Body build | Glass front (Gorilla Glass 3), plastic frame, plastic back | |
| Battery | Oppo Realme C20 | vivo Y11 |
| Battery capacity | | 1700 mAh, Removable Li-Po |
| Battery life | | Talking time- Up to 11 h (2G) / Up to 8 h (3G)
Music play - Up to 34 h |
| Battery | 5000 mAh, Li-Po, non-removable | |
| Other | Oppo Realme C20 | vivo Y11 |
| Release date | | 2014, Q4 |
| Sensors | | Accelerometer, proximity , Infrared port |
| Other features | Oppo Realme C20 | vivo Y11 |
| Sensors | Accelerometer, proximity, compass
Charging 10W | |
