The Nokia Lumia 820 is a mid-range smartphone that was released in 2012. It features a 4.3-inch AMOLED display with a resolution of 800 x 480 pixels, providing vibrant colors and decent clarity. The device runs on the Windows Phone 8 operating system and is powered by a dual-core processor, ensuring smooth performance for everyday tasks. The Lumia 820 comes with an 8-megapixel rear camera, capable of capturing good-quality photos and videos. It also supports interchangeable back covers, allowing users to customize the phone's appearance. With a removable battery and expandable storage via a microSD card, the Lumia 820 offers flexibility for users.