| Hardware and OS | Ulefone S1 Pro | vivo Y11 |
| Operating system | Android 8.1 Oreo Go Edition | Android 4.4.4 (KitKat) |
| Processor | ARM Cortex-A53, 1300 MHz, Cores: 4 | Quad-core 1.3 GHz Cortex-A7 |
| Chipset | | Mediatek MT6582М |
| GPU | PowerVR GE8100 | Mali-400MP2 |
| RAM | 1 GB, 667 MHz | |
| Internal memory | | 4 GB, 512 MB RAM |
| Internal Storage | 16 GB | |
| External memory | | microSD, up to 256 GB (dedicated slot) |
| Memory Card Slot | microSD, microSDHC, microSDXC | |
| User Interface | Yes | |
| Display | Ulefone S1 Pro | vivo Y11 |
| Type | IPS | IPS LCD |
| Size | 5.5 inches | 4" inc |
| Resolution | 480 x 960 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 | 195 ppi | 233 PPI |
| Protection | 2.5D curved glass screen | |
| Colors | 16M Colors | 16M |
| Features | Capacitive, Multi-touch | |
| Connectivity | Ulefone S1 Pro | vivo Y11 |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 4G Network | Yes | |
| Wi-Fi | a, b, g, n, n 5GHz, Dual band, Wi-Fi Hotspot | 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 | Yes, with A-GPS |
| Dual SIM | Nano-SIM / microSD, Nano-SIM | |
| Speed | LTE 800 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz | HSPA 21.1/7.2 Mbps |
| Wireless Charging | No | |
| USB | 2.0, Micro USB | microUSB 2.0, USB Host |
| Camera | Ulefone S1 Pro | vivo Y11 |
| Main camera | 7.99 MP (megapixels) | 5 MP, Single |
| Specs | | 5 MP, AF |
| Image | 3264 x 2448 pixels | |
| Features | Dual LED | LED flash |
| Video | | 1080p@30fps |
| Selfie camera | 1.92 MP (megapixels) | 2 MP, Single |
| Multimedia | Ulefone S1 Pro | 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 | Ulefone S1 Pro | vivo Y11 |
| Colors | | White, Black |
| Dimensions | 70.7 x 148.6 x 9.55 mm | 123 x 62.5 x 8.8 mm |
| Weight | 183 g | 124 g |
| Waterproof | No | |
| Battery | Ulefone S1 Pro | 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 |
| Capacity | 3000 mAh, Li-Ion | |
| Other | Ulefone S1 Pro | vivo Y11 |
| Release date | | 2014, Q4 |
| Sensors | Proximity, Light, Accelerometer | Accelerometer, proximity , Infrared port |
