| Xolo Black |
Oppo A3s |
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| Hardware and OS | Xolo Black | Oppo A3s |
| Operating system | Android 5.0 (Lollipop); HIVE Atlas UI | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm MSM8939 Snapdragon 615 (28 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 405 | Adreno 506 |
| Internal memory | 16 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| External memory | microSD, up to 32 GB (uses SIM 2 slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Xolo Black | Oppo A3s |
| Type | IPS LCD | IPS LCD |
| Size | 5.5" inc | 6.2" inc |
| Resolution | 1080 x 1920 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Protection | Corning Gorilla Glass 3 | |
| Screen-to-Body Ratio | 69.3% | 81.2% |
| Display area | 82.6 cm2 | 95.9 cm2 |
| Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 403 PPI | 271 PPI |
| Colors | 16M | 16M |
| Connectivity | Xolo Black | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE 1800 TD-LTE 2300 | LTE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
| SIM card | Hybrid Dual SIM (Micro-SIM/Nano-SIM) | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 4.0, A2DP | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS |
| Speed | HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | microUSB 2.0 | microUSB 2.0, USB On-The-Go |
| Camera | Xolo Black | Oppo A3s |
| Main camera | 13 MP, Dual | 13 MP, Dual |
| Specs | 13 MP, AF -2 MP, depth sensor | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor |
| Features | LED flash, panorama, HDR | LED flash, HDR, panorama |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera | 5 MP, Single | 8 MP, Single |
| Multimedia | Xolo Black | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | FM radio | FM radio |
| Design | Xolo Black | Oppo A3s |
| Colors | Black | Red, Dark Purple |
| Dimensions | 155.5 x 76.6 x 7.3 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 168 g | |
| Body build | Front/back glass (Gorilla Glass 3), aluminum frame | |
| Battery | Xolo Black | Oppo A3s |
| Battery capacity | 3200 mAh, Non-removable Li-Po | 4230 mAh, Non-removable Li-Ion |
| Battery life | Stand by time- Up to 736 h (2G) / Up to 699 h (3G) Talking time- Up to 36 h (2G) / Up to 24 h (3G) | |
| Other | Xolo Black | Oppo A3s |
| Release date | 2015, July | 2018, July |
| Sensors | Accelerometer, gyro, proximity, compass | Accelerometer, proximity, compass |
| SAR | SAR EU - 0.13 W/kg (head), 0.27 W/kg (body) |
