| Oppo K9 |
vivo Y11 |
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| Hardware and OS | Oppo K9 | vivo Y11 |
| Operating system | Android 11, ColorOS 11.1 | Android 4.4.4 (KitKat) |
| Processor | Octa-core (1x2.8 GHz Kryo 475 Prime & 1x2.4 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver) | Quad-core 1.3 GHz Cortex-A7 |
| Chipset | Qualcomm SM7250-AC Snapdragon 768G 5G (7 nm) | Mediatek MT6582М |
| GPU | Adreno 620 | Mali-400MP2 |
| Internal memory | 128GB 8GB RAM, 256GB 8GB RAM | 4 GB, 512 MB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | Oppo K9 | vivo Y11 |
| Type | Super AMOLED, 90Hz, 430 nits (typ), 750 nits (peak) | IPS LCD |
| Size | 6.43 inches, 99.8 cm2 | 4" inc |
| Resolution | 1080 x 2400 pixels, 20:9 ratio | 480 x 800 px |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 59.2% | |
| Display area | 45.5 cm2 | |
| Display aspect ratio | 5:3 (height:width) | |
| Pixel Density | 233 PPI | |
| Colors | 16M | |
| Main Camera | Oppo K9 | vivo Y11 |
| Camera | 64 MP, f/1.7, (wide), PDAF 8 MP, f/2.2, (ultrawide) 2 MP, f/2.4, (macro) | |
| Features | LED flash, HDR, panorama | |
| Video | 4K@30fps, 1080p@30/60/120fps; gyro-EIS | |
| Selfie camera | Oppo K9 | vivo Y11 |
| Camera | 32 MP, f/2.4, (wide) | |
| Video | 1080p@30fps | |
| Connectivity | Oppo K9 | vivo Y11 |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | |
| Network | GSM / HSPA | |
| 3G Network | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | |
| SIM card | Dual SIM (Micro-SIM, dual stand-by) | |
| 4G Network | 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41 | |
| Bluetooth | 5.0, A2DP, LE, aptX HD | 4.0, A2DP, EDR |
| 5G Network | 1, 3, 28, 41, 77, 78 SA/NSA | |
| Edge | Yes | |
| GPRS | Yes | |
| CDMA | CDMA 800 | |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G | HSPA 21.1/7.2 Mbps |
| USB | USB Type-C 2.0, USB On-The-Go | microUSB 2.0, USB Host |
| NFC | No | |
| Technology | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Camera | Oppo K9 | vivo Y11 |
| Main camera | 5 MP, Single | |
| Specs | 5 MP, AF | |
| Features | LED flash | |
| Video | 1080p@30fps | |
| Selfie camera | 2 MP, Single | |
| Multimedia | Oppo K9 | vivo Y11 |
| Loudspeaker | Yes | |
| 3.5 mm Jack | Yes | Yes |
| Radio | No | FM radio |
| Design | Oppo K9 | vivo Y11 |
| Colors | Black, Aurora | White, Black |
| Dimensions | 159.1 x 73.4 x 7.9 mm (6.26 x 2.89 x 0.31 in) | 123 x 62.5 x 8.8 mm |
| Weight | 172 g (6.07 oz) | 124 g |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Battery | Oppo K9 | vivo Y11 |
| Type | Li-Po 4300 mAh, non-removable | |
| Charging | Fast charging 65W, 100% in 35 min (advertised) | |
| 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 | |
| Features | Oppo K9 | vivo Y11 |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | |
| Other | Oppo K9 | vivo Y11 |
| Release date | 2014, Q4 | |
| Sensors | Accelerometer, proximity , Infrared port |
