Audio and Connectivity
The Lumia 820 housed a loudspeaker and a 3.5mm audio jack, ensuring standard sound output options. It supported a range of communication technologies, including dual-band Wi-Fi, Bluetooth 4.0 (which gained features like aptX after the WP8 Denim update), NFC, GPS with A-GPS, and GLONASS, providing comprehensive connectivity solutions. The inclusion of FM radio and microUSB 2.0 further cemented its position as a well-rounded communication tool.