| Hardware and OS | Nokia Asha 503 Dual SIM | |
| Operating system | Nokia Asha software platform 1.2, upgradable to 1.4 | |
| External memory | microSD, up to 32 GB (dedicated slot), 4 GB card included | |
| Display | Nokia Asha 503 Dual SIM | other phones |
| Type | TFT | |
| Size | 3" inc | |
| Resolution | 240 x 320 px | |
| Protection | Corning Gorilla Glass | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 44.8% | |
| Display area | 27.9 cm2 | |
| Display aspect ratio | 4:3 (height:width) | |
| Pixel Density | 133 PPI | |
| Colors | 256K | |
| Connectivity | Nokia Asha 503 Dual SIM | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| Wi-Fi | Wi-Fi 802.11 b/g/n | |
| Network | GSM / HSPA | |
| SIM card | Dual SIM (Micro-SIM, dual stand-by) | |
| Bluetooth | 3.0, A2DP | |
| Edge | Up to 236.8 kbps | |
| GPRS | Up to 85.6 kbps | |
| GPS | No | |
| Speed | HSPA 7.2/5.76 Mbps | |
| USB | microUSB 2.0 | |
| Camera | Nokia Asha 503 Dual SIM | other phones |
| Main camera | 5 MP, Single | |
| Specs | 5 MP | |
| Features | LED flash | |
| Video | 480p@19fps | |
| Multimedia | Nokia Asha 503 Dual SIM | other phones |
| 3.5 mm Jack | Yes | |
| Radio | Stereo FM radio | |
| Design | Nokia Asha 503 Dual SIM | other phones |
| Colors | Yellow, black, green, red, blue, white | |
| Dimensions | 102.6 x 60.6 x 12.7 mm | |
| Weight | 111.4 g | |
| Battery | Nokia Asha 503 Dual SIM | other phones |
| Battery capacity | 1200 mAh, Removable Li-Ion | |
| Battery life | Stand by time- Up to 480 h (2G) / Up to 480 h (3G)
Talking time- Up to 12 h (2G) / Up to 4 h 30 min (3G)
Music play - Up to 36 h | |
| Other | Nokia Asha 503 Dual SIM | other phones |
| SAR | SAR EU - 1.43 W/kg (head), 0.64 W/kg (body) | |
| Release date | 2013, October | |
| Sensors | Accelerometer, proximity | |
