| Hardware and OS | Blackview Oscal C20 | vivo Y11 |
| Operating system | Android 11 Red Velvet Cake | Android 4.4.4 (KitKat) |
| Processor | Quad-Core (4x Cortex A7 1.3 GHz) | Quad-core 1.3 GHz Cortex-A7 |
| Chipset | Spreadtrum SC7731E (28 nm) | Mediatek MT6582М |
| GPU | ARM Mali-400 MP1 | Mali-400MP2 |
| Internal memory | 1GB 32GB | 4 GB, 512 MB RAM |
| External memory | | microSD, up to 256 GB (dedicated slot) |
| Display | Blackview Oscal C20 | vivo Y11 |
| Type | LCD IPS | IPS LCD |
| Size | 6.09" inc | 4" inc |
| Resolution | 720 x 1560 px | 480 x 800 px |
| Display colors | 16M | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen area | cm2 | |
| Screen-to-Body Ratio | | 59.2% |
| Screen format | 19.5:9 (height:width) | |
| Display area | | 45.5 cm2 |
| Screen to body ratio | 79% | |
| Display aspect ratio | | 5:3 (height:width) |
| PPI /points per inch/ | 282 PPI | |
| Pixel Density | | 233 PPI |
| Colors | | 16M |
| Connectivity | Blackview Oscal C20 | vivo Y11 |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Wi-Fi | 802.11b, 802.11g, 802.11n,Wi-Fi Hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| NFC | No | |
| Network | 2G / 3G / | GSM / HSPA |
| SIM card | Dual SIM, dual stand-by (Nano SIM Nano SIM) | Dual SIM (Micro-SIM, dual stand-by) |
| Bluetooth | Bluetooth 4.2, A2DP, LE | 4.0, A2DP, EDR |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | GPS, A-GPS, GLONASS, Beidou | Yes, with A-GPS |
| Speed | | HSPA 21.1/7.2 Mbps |
| USB | Yes | microUSB 2.0, USB Host |
| Camera | Blackview Oscal C20 | vivo Y11 |
| Rear camera, main | 5 MP, Single | |
| Main camera | | 5 MP, Single |
| Camera specs | 5 MP, ?/ 2.0, (wide), 1.12 µm | |
| Specs | | 5 MP, AF |
| Functions | LED flash | |
| Features | | LED flash |
| Video | 1080p video | 1080p@30fps |
| Front camera, selfie | 2 MP, Single | |
| Selfie camera | | 2 MP, Single |
| Specifications | 2 MP, ?/ 2.2, 1.75 µm | |
| Multimedia | Blackview Oscal C20 | vivo Y11 |
| Headphone jack | Yes | |
| 3.5 mm Jack | | Yes |
| Radio | Yes | FM radio |
| Design | Blackview Oscal C20 | vivo Y11 |
| Dimensions (HxWxD) | 155.4 x73.5 x 9.5 mm | 6.12 x 2.89 x 0.37 in | |
| Colors | Black, Blue, Red, Purple | White, Black |
| Dimensions | | 123 x 62.5 x 8.8 mm |
| Weight | 156 g | 5.5 oz | 124 g |
| Body build | Plastic | |
| Battery | Blackview Oscal C20 | vivo Y11 |
| Battery capacity | | 1700 mAh, Removable Li-Po |
| Battery | 3380 mAh, Li-Polymer, Removable | |
| Battery life | | Talking time- Up to 11 h (2G) / Up to 8 h (3G)
Music play - Up to 34 h |
| Other features | Blackview Oscal C20 | vivo Y11 |
| Sensors | Proximity, Accelerometer , Infrared port | |
| Other | Blackview Oscal C20 | vivo Y11 |
| Release date | | 2014, Q4 |
| Sensors | | Accelerometer, proximity , Infrared port |
