| Hardware and OS | Realme U1 | vivo Y11 |
| Operating system | ColorOS 5.2 (Android 8.1 Oreo) | Android 4.4.4 (KitKat) |
| Processor | 4x 2.1 GHz ARM Cortex-A73, 4x 1.95 GHz ARM Cortex-A53, Cores: 8 | Quad-core 1.3 GHz Cortex-A7 |
| Chipset | | Mediatek MT6582М |
| GPU | ARM Mali-G72 MP3, 900 MHz, Cores: 3 | Mali-400MP2 |
| RAM | 3 GB, 4 GB, 933 MHz | |
| Internal memory | | 4 GB, 512 MB RAM |
| Internal Storage | 32 GB, 64 GB | |
| External memory | | microSD, up to 256 GB (dedicated slot) |
| Memory Card Slot | microSD, microSDHC, microSDXC | |
| User Interface | Yes | |
| Display | Realme U1 | vivo Y11 |
| Type | IPS | IPS LCD |
| Size | 6.3 inches | 4" inc |
| Resolution | 1080 x 2340 pixels | 480 x 800 px |
| Touchscreen | Yes | capacitive touchscreen |
| Screen-to-Body Ratio | | 59.2% |
| Display area | | 45.5 cm2 |
| Display aspect ratio | | 5:3 (height:width) |
| Pixel Density | 409 ppi | 233 PPI |
| Protection | Corning Gorilla Glass 3 | |
| Colors | 16M | 16M |
| Features | Capacitive, Multi-touch, Scratch resistant | |
| Connectivity | Realme U1 | vivo Y11 |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 4G Network | Yes | |
| Wi-Fi | a, b, g, n, n 5GHz, ac, Dual band, Wi-Fi Hotspot, Wi-Fi Direct | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| Network | | GSM / HSPA |
| SIM card | | Dual SIM (Micro-SIM, dual stand-by) |
| NFC | No | |
| Bluetooth | | 4.0, A2DP, EDR |
| Edge | | Yes |
| GPRS | | Yes |
| SIM | Nano SIM | |
| GPS | GPS, A-GPS, GLONASS | Yes, with A-GPS |
| Dual SIM | Nano-SIM | |
| Speed | LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) | HSPA 21.1/7.2 Mbps |
| Wireless Charging | No | |
| USB | 2.0, Micro USB | microUSB 2.0, USB Host |
| Camera | Realme U1 | vivo Y11 |
| Main camera | 12.98 MP (megapixels) | 5 MP, Single |
| Specs | | 5 MP, AF |
| Image | 4160 x 3120 pixels | |
| Features | LED | LED flash |
| Video | | 1080p@30fps |
| Selfie camera | 24.84 MP (megapixels) | 2 MP, Single |
| Multimedia | Realme U1 | vivo Y11 |
| Loudspeaker | Yes | |
| Handsfree | Yes | |
| 3.5 mm Jack | yes | Yes |
| Video Playback | Yes | |
| Radio | Yes | FM radio |
| Video Out | Yes | |
| Ring Tones | Yes | |
| Design | Realme U1 | vivo Y11 |
| Colors | | White, Black |
| Dimensions | | 123 x 62.5 x 8.8 mm |
| Weight | | 124 g |
| Waterproof | No | |
| Battery | Realme U1 | vivo Y11 |
| Battery capacity | | 1700 mAh, Removable Li-Po |
| Capacity | 3500 mAh, Li-Polymer | |
| Battery life | | Talking time- Up to 11 h (2G) / Up to 8 h (3G)
Music play - Up to 34 h |
| Other | Realme U1 | vivo Y11 |
| Release date | | 2014, Q4 |
| Sensors | Proximity, Light, Accelerometer, Compass, Fingerprint | Accelerometer, proximity , Infrared port |
