Clamshell phones are tried and tested form factors for cell phones. Many people identify a cell phone as a clamshell, or flip phone, design. The Sony Ericsson z520a is the perfect example of a trendy clamshell phone. The Ericsson cell phone is a quad band phone, which works on GSM networks across the globe. A beautiful color display on the inside is mirrored by the front screen, which is also full color. The front screen is not quite as simple as most phones, as it does not just display caller information, it also plays musical ringtones and displays flashing lights around the outside that tell the user exactly who is calling without them even needing to look at the LCD. A 16 MB memory built into the phone gives you plenty of room for ringtones and pictures. Speaking of pictures, a 4x zoom VGA camera allows for quick and easy image capture. The camera also has video capture, so you don' thave to stop at still! Last but not least, Sony Ericsson's quick share application makes it easy to share photos. The phone also supports bluetooth, so you can use a wide range of accessories without worrying about pesky wires. Full messaging support is available, including SMS and MMS, so you can send the photos and videos you've captured to your friends and family easily. Other simple phone functions like calendar, phone book and conference calling are also found on the unit. All in all it makes a great package for a fun phone.