| Nokia Asha 503 |
Oppo A3s |
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| Hardware and OS | Nokia Asha 503 | Oppo A3s |
| Operating system | Nokia Asha software platform 1.2 | Android 8.1 (Oreo); ColorOS 5.1 |
| External memory | microSD, up to 32 GB (dedicated slot), 4 GB card included | microSD, up to 256 GB (dedicated slot) |
| Processor | Octa-core 1.8 GHz Cortex-A53 | |
| Chipset | Qualcomm SDM450 Snapdragon 450 (14 nm) | |
| GPU | Adreno 506 | |
| Internal memory | 16 GB, 2 GB RAM | |
| Display | Nokia Asha 503 | Oppo A3s |
| Type | TFT | IPS LCD |
| Size | 3" inc | 6.2" inc |
| Resolution | 240 x 320 px | 720 x 1520 px |
| Protection | Corning Gorilla Glass | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 44.8% | 81.2% |
| Display area | 27.9 cm2 | 95.9 cm2 |
| Display aspect ratio | 4:3 (height:width) | 19:9 (height:width) |
| Pixel Density | 133 PPI | 271 PPI |
| Colors | 256K | 16M |
| Connectivity | Nokia Asha 503 | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Wi-Fi | Wi-Fi 802.11 b/g/n | 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 | 3.0, A2DP | 4.2, A2DP, LE |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| Edge | Up to 236.8 kbps | Yes |
| 4G Network | LTE | |
| GPRS | Up to 85.6 kbps | Yes |
| GPS | No | Yes, with A-GPS |
| Speed | HSPA 7.2/5.76 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 | Nokia Asha 503 | Oppo A3s |
| Main camera | 5 MP, Single | 13 MP, Dual |
| Specs | 5 MP | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor |
| Features | LED flash | LED flash, HDR, panorama |
| Video | 480p@19fps | 1080p@30fps |
| Selfie camera | 8 MP, Single | |
| Multimedia | Nokia Asha 503 | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | Stereo FM radio | FM radio |
| Design | Nokia Asha 503 | Oppo A3s |
| Colors | Yellow, black, green, red, blue, white | Red, Dark Purple |
| Dimensions | 102.6 x 60.6 x 12.7 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 110.2 g | 168 g |
| Battery | Nokia Asha 503 | Oppo A3s |
| Battery capacity | 1200 mAh, Removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Battery life | Stand by time- Up to 840 h (2G) / Up to 840 h (3G) Talking time- Up to 12 h (2G) / Up to 4 h 30 min (3G) Music play - Up to 34 h | |
| Other | Nokia Asha 503 | Oppo A3s |
| SAR | SAR EU - 1.43 W/kg (head), 0.64 W/kg (body) | |
| Release date | 2013, October | 2018, July |
| Sensors | Accelerometer, proximity | Accelerometer, proximity, compass |
