| Samsung Galaxy S4 |
Oppo A3s |
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| Hardware and OS | Samsung Galaxy S4 | Oppo A3s |
| Operating system | Android 4.2.2 (Jelly Bean), upgradable to 5.0.1 (Lollipop); TouchWiz UI | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (4x1.6 GHz Cortex-A15 & 4x1.2 GHz Cortex-A7) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Exynos 5410 Octa (28 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | PowerVR SGX544MP3 | Adreno 506 |
| Internal memory | 16/32/64 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| External memory | microSD, up to 64 GB (dedicated slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Samsung Galaxy S4 | Oppo A3s |
| Type | Super AMOLED | IPS LCD |
| Size | 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 | 72.3% | 81.2% |
| Display area | 68.9 cm2 | 95.9 cm2 |
| Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 441 PPI | 271 PPI |
| Colors | 16M | 16M |
| Connectivity | Samsung Galaxy S4 | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | LTE | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / HSPA | GSM / HSPA / LTE |
| SIM card | Micro-SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 4.0, A2DP, EDR, LE, aptX | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS |
| NFC | Yes | |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat3 100/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | microUSB 2.0 (MHL 2 TV-out), USB Host | microUSB 2.0, USB On-The-Go |
| Camera | Samsung Galaxy S4 | Oppo A3s |
| Main camera | 13 MP, Single | 13 MP, Dual |
| Specs | 13 MP, f/2.2, 31mm (standard), 1/3', 1.14µm, AF | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor |
| Features | LED flash, HDR | LED flash, HDR, panorama |
| Video | 1080p@30fps, dual-video rec. | 1080p@30fps |
| Selfie camera | 2 MP, Single | 8 MP, Single |
| Multimedia | Samsung Galaxy S4 | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | No | FM radio |
| Design | Samsung Galaxy S4 | Oppo A3s |
| Colors | White Frost, Black Mist, Arctic Blue, Black Edition | Red, Dark Purple |
| Dimensions | 136.6 x 69.8 x 7.9 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 130 g | 168 g |
| Body build | Plastic body | |
| Battery | Samsung Galaxy S4 | Oppo A3s |
| Battery capacity | 2600 mAh, Removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Battery life | Stand by time- Up to 370 h (3G) Talking time- Up to 17 h (3G) Music play - Up to 62 h | |
| Other | Samsung Galaxy S4 | Oppo A3s |
| Release date | 2013, March | 2018, July |
| Sensors | Accelerometer, gyro, proximity, compass, barometer, temperature, humidity, gesture , Infrared port | Accelerometer, proximity, compass |
| SAR | SAR - 0.85 W/kg (head), 1.55 W/kg (body), SAR EU - 0.42 W/kg (head), 0.54 W/kg (body) |
