| Hardware and OS | Samsung I929 Galaxy S II Duos | vivo Y11 |
| Operating system | Android 2.3.5 (Gingerbread) | Android 4.4.4 (KitKat) |
| Processor | Dual-core 1.2 GHz Scorpion | Quad-core 1.3 GHz Cortex-A7 |
| Chipset | Qualcomm MSM8660 Snapdragon S3 | Mediatek MT6582М |
| GPU | Adreno 220 | Mali-400MP2 |
| Internal memory | 16 GB, 1 GB RAM | 4 GB, 512 MB RAM |
| External memory | microSD, up to 32 GB (dedicated slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Samsung I929 Galaxy S II Duos | vivo Y11 |
| Type | Super AMOLED Plus | IPS LCD |
| Size | 4.52" inc | 4" inc |
| Resolution | 480 x 800 px | 480 x 800 px |
| Protection | Corning Gorilla Glass | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 65.0% | 59.2% |
| Display area | 58.2 cm2 | 45.5 cm2 |
| Display aspect ratio | 5:3 (height:width) | 5:3 (height:width) |
| Pixel Density | 206 PPI | 233 PPI |
| Colors | 16M | 16M |
| Connectivity | Samsung I929 Galaxy S II Duos | vivo Y11 |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| Network | GSM / CDMA / EVDO | GSM / HSPA |
| SIM card | Dual SIM (Mini-SIM, dual stand-by) | Dual SIM (Micro-SIM, dual stand-by) |
| Bluetooth | 3.0, A2DP, aptX | 4.0, A2DP, EDR |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS | Yes, with A-GPS |
| Speed | EV-DO Rev.A 3.1 Mbps | HSPA 21.1/7.2 Mbps |
| USB | microUSB 2.0 (MHL TV-out), USB Host | microUSB 2.0, USB Host |
| Camera | Samsung I929 Galaxy S II Duos | vivo Y11 |
| Main camera | 8 MP, Single | 5 MP, Single |
| Specs | 8 MP, f/2.6, 1/3.2', AF | 5 MP, AF |
| Features | LED flash | LED flash |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera | 2 MP, Single | 2 MP, Single |
| Multimedia | Samsung I929 Galaxy S II Duos | vivo Y11 |
| 3.5 mm Jack | Yes | Yes |
| Radio | Stereo FM radio, RDS | FM radio |
| Design | Samsung I929 Galaxy S II Duos | vivo Y11 |
| Colors | Black | White, Black |
| Dimensions | 129.8 x 68.9 x 9.7 mm | 123 x 62.5 x 8.8 mm |
| Weight | 138 g | 124 g |
| Battery | Samsung I929 Galaxy S II Duos | vivo Y11 |
| Battery capacity | 1800 mAh, Removable Li-Ion | 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 |
| Other | Samsung I929 Galaxy S II Duos | vivo Y11 |
| SAR | SAR - 0.79 W/kg (head), 0.73 W/kg (body),
SAR EU - 0.85 W/kg (head) | |
| Release date | 2011, December | 2014, Q4 |
| Sensors | Accelerometer, gyro, proximity, compass | Accelerometer, proximity , Infrared port |
