When it comes to connectivity features of this device, you can make use of
Dual SIM card slots, 7.2Mbps HSDPA, 5.76Mbps HSUPA, GPRS, EDGE, Wi-Fi b/g/n, Bluetooth v3.0, and microUSB port. However, it lacks GPS, so you should not hope to use the Nokia Asha 503 for navigational purposes. The 1,200 mAh (BL-4U) removable battery is quoted to last up to 840 hours of stand-by time, 12 hours of voice calls over 2G networks, or 4 hours and 30 minutes when on
3G networks.