The W580 has been a staple of GSM phone carriers ever since it was released simply because it does most things well (including music) at a low-enough price. Still, there were definite limitations, and the device now has a RAZR-like overabundance that signals a time for something new. The W760 promises to check off some the remaining flaws -- including the addition of 3G -- but also faces a tougher cellphone market. Sony Ericsson's ultimate challenge may be less to improve the device and more to consider the roles of the devices themselves. Read our full W760 review to see where the slider fits in.