The Lumia 525 doesn’t differ much when it comes to design from the 520. The only difference is maybe the back panel which is of matte finish in the 520 and of glossy finish in the 525 . The panels are however interchangeable, and you can attach a glossy panel to your 520 if you wish to. Apart from this, the screen size is same 4 inches, with a 800x480p resolution, which does make the pictures and text appear a little bit pixelated, but if you go and look at the other phones in the similar price range you will find the 525 to be a better choice. The phone weighs the same as the 520 and does feel pretty strong and durable if you hold it. On the right edge of the phone you will find the lock/power, camera and the volume control keys. And like all windows phones you will find the capacitive keys for home, back and search right below the screen.