Aaron unboxes the Nokia Lumia 521 at CTIA 2013 in Las Vegas. Available at T-Mobile retail stores today (May 22) for $150 with NO contract, the Lumia 521 is a really attractive option for those on a tight budget. Featuring a 1 GHz dual-core CPU, the Lumia 521 sports a 4-inch display, 5-megapixel camera, and HSPA+ connectivity. Unlike Android, the great thing about Windows Phone 8 is the software runs well on what many would consider mid-range specs, so the overall experience on a Lumia 521 (for example) is quite similar to the high-end Lumia devices. What's more, Nokia appears to be committed to making sure their mid-range handsets get some of the goodies that the high-end devices get, as evident with the upcoming Amber update.