| Vsmart Star 4 |
Oppo A3s |
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| Hardware and OS | Vsmart Star 4 | Oppo A3s |
| Operating system | Android 10 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | MediaTek Helio P35 MT6765 Processor clock: 2.30 GHz Number of cores: 8 GPU: PowerVR GE8320 @680 MHz | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm SDM450 Snapdragon 450 (14 nm) | |
| RAM memory | 2 GB, 3 GB, 4 GB | |
| GPU | Adreno 506 | |
| Internal memory | 16 GB, 32 GB, 64 GB | 16 GB, 2 GB RAM |
| SIM cards standard | nanoSIM, nanoSIM | |
| External memory | microSD, up to 256 GB (dedicated slot) | |
| Memory cards | yes microSD, microSDHC, microSDXC (up to 64 GB) | |
| Display | Vsmart Star 4 | Oppo A3s |
| Type | IPS LCD | |
| Display | Color / IPS TFT 16M colors, 60 Hz 720 x 1560 px (6.09") 282 ppi ~78.7% screen-to-body ratio | |
| Size | 6.2" inc | |
| Display protection | yes | |
| Resolution | 720 x 1520 px | |
| Touchscreen | yes | capacitive touchscreen |
| Screen-to-Body Ratio | 81.2% | |
| Display area | 95.9 cm2 | |
| Display aspect ratio | 19:9 (height:width) | |
| Pixel Density | 271 PPI | |
| Colors | 16M | |
| Connectivity | Vsmart Star 4 | Oppo A3s |
| NFC | yes | |
| WiFi | yes v802.11 b/g/n | |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| Hotspot WiFi | yes | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| DLNA | yes | |
| 4G Network | LTE | |
| IrDA | yes | |
| Wi-Fi | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot | |
| WAP | yes v2.0 | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | yes v4.2 | 4.2, A2DP, LE |
| Edge | yes | Yes |
| GPRS | yes | Yes |
| GPS | yes | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |
| USB | yes v2.0 Type-C | microUSB 2.0, USB On-The-Go |
| Camera | Vsmart Star 4 | Oppo A3s |
| Flash | yes LED | |
| Digital zoom | yes | |
| Additional | AF, f/2.0 | |
| Video formats | H.263, H.264, MPEG4 - 30 fps | |
| Video resolution | 1920x1080 | |
| Main camera | 8 Mpx | 13 MP, Dual |
| Specs | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps | |
| Selfie camera | 8 Mpx | 8 MP, Single |
| Multimedia | Vsmart Star 4 | Oppo A3s |
| 3.5 mm Jack | Yes | |
| Radio | yes | FM radio |
| Design | Vsmart Star 4 | Oppo A3s |
| Colors | Red, Dark Purple | |
| Dimensions | 156.24 x 74.00 x 8.80 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 165.00 g | 168 g |
| Battery | Vsmart Star 4 | Oppo A3s |
| Capacity | Li-Ion 3500 mAh | |
| Quick battery charging | yes | |
| Wireless battery charging | yes | |
| Battery capacity | 4230 mAh, Non-removable Li-Ion | |
| Other | Vsmart Star 4 | Oppo A3s |
| Accelerometer | yes | |
| Altimeter | yes | |
| Release date | 2018, July | |
| Barometer | yes | |
| Sensors | Accelerometer, proximity, compass | |
| Fingerprint scanner | yes | |
| Gravity | yes | |
| Gyroscope | yes | |
| Hall-effect | yes | |
| Hygrometer | yes | |
| Iris scanner | yes | |
| Magnetometer | yes | |
| Proximity | yes | |
| Thermometer | yes |
