The Nokia Lumia 521 is a budget-friendly smartphone that runs on the Windows Phone operating system. It features a 4-inch touchscreen display, a 5-megapixel rear camera, and 8 GB of internal storage, which can be expanded using a microSD card. The device is known for its vibrant colors and user-friendly interface, making it accessible for first-time smartphone users. Released in 2013, the Lumia 521 is part of the Nokia Lumia series, which was popular for its solid build quality and reliable performance. It supports 4G LTE connectivity, allowing for faster internet browsing and streaming. The phone also includes a removable battery, providing users with the option to replace it easily.