| Samsung Galaxy M Style M340S |
Oppo A3s |
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| Hardware and OS | Samsung Galaxy M Style M340S | Oppo A3s |
| Operating system | Android 2.3 (Gingerbread) | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | 1.0 GHz Cortex-A8 | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm SDM450 Snapdragon 450 (14 nm) | |
| GPU | Adreno 506 | |
| Internal memory | 4 GB | 16 GB, 2 GB RAM |
| External memory | microSD, up to 32 GB (dedicated slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Samsung Galaxy M Style M340S | Oppo A3s |
| Type | Super AMOLED | IPS LCD |
| Size | 4" inc | 6.2" inc |
| Resolution | 480 x 800 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 59.0% | 81.2% |
| Display area | 45.5 cm2 | 95.9 cm2 |
| Display aspect ratio | 5:3 (height:width) | 19:9 (height:width) |
| Pixel Density | 233 PPI | 271 PPI |
| Colors | 16M | 16M |
| Connectivity | Samsung Galaxy M Style M340S | Oppo A3s |
| 2G Network | GSM | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | LTE | |
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | HSPA | GSM / HSPA / LTE |
| SIM card | No | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 3.0, A2DP | 4.2, A2DP, LE |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS | Yes, with A-GPS |
| Speed | HSPA | 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 | Samsung Galaxy M Style M340S | Oppo A3s |
| Main camera | 3.15 MP, Single | 13 MP, Dual |
| Specs | 3.15 MP, AF | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor |
| Features | LED flash, HDR, panorama | |
| Video | 720p | 1080p@30fps |
| Selfie camera | 0.3 MP, Single | 8 MP, Single |
| Multimedia | Samsung Galaxy M Style M340S | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | FM radio | |
| Design | Samsung Galaxy M Style M340S | Oppo A3s |
| Colors | Platinum Silver, Blue Black, Lavender Pink | Red, Dark Purple |
| Dimensions | 122.5 x 63 x 9.9 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 123.5 g | 168 g |
| Battery | Samsung Galaxy M Style M340S | Oppo A3s |
| Battery life | Stand by time- Up to 840 h (2G) / Up to 560 h (3G) Talking time- Up to 13 h 10 min (2G) / Up to 9 h (3G) | |
| Battery capacity | 1650 mAh, Removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Other | Samsung Galaxy M Style M340S | Oppo A3s |
| SAR | SAR - 0.74 W/kg (head), SAR EU - 0.43 W/kg (head) | |
| Release date | 2012, January | 2018, July |
| Sensors | Accelerometer, proximity, compass | Accelerometer, proximity, compass |
