There's more to a good mobile than just a pretty fascia, as Sony Ericsson well knows. While Sony Ericsson has made a mint out of it Walkman phone re-invention and boosted its profile by introducing Sony Cyber-shot technology into its top cameraphones, its fashion phone offerings have been relatively low-key. The S500i sliderphone, though, shows that Sony Ericsson too can make something a bit flashy. Literally.

The S500i grabs attention with a series of pulsing light effects down its side, and handsome contrasting colour combinations. The lighting effects are in tune with the S500i's "inspired by nature" themes; more northern lights than northern nightclub - subtle and gentle rather than eye-searingly brash.

This particular sliderphone is aimed at the style-conscious buyer who's not looking at the big-budget end of the market. The S500i doesn't have the latest 3G technology on board (it's a quad-band EDGE handset), nor any smartphone pretensions.

It does, though, have a decent set of mid-range features, including a 2-megapixel camera, digital music player with swappable Memory Stick Micro M2 card support, and full web browser and support for RSS feeds.

Light works

The Sony Ericsson S500i is another slimline sliderphone, similar in body shape to the W580i and its more upmarket W910i Walkman stablemate. It has tactile rubber-textured back panel, and a glossy front panel with a fair sized screen (a 262K-colour 240x320 pixels display).

It comes in a variety of colours, the "mysterious green" version we looked at being a predominantly black model with a touch of silver trim. Slip open the slider, though and the green is seen - the whole keyboard is a metallic green, and round the back the camera is revealed with a green panelling surrounding it.

An unusual colour combination for a phone, but it is elegant. Other colours include "Ice Purple", "Spring Yellow" and "Contrasted Copper."

The keypad itself is laid out for sensible sized finger-tapping with big enough keys laid out in a straightforward four-row grid.

Opening the display also debuts the lighting effects, with the sides of the phone glowing from translucent panels inside. The navigation pad surround also lights up.

The smooth slider feels solid enough, although there is a bit of plastic squeakyness when pushing on the front panel.

The lighting effects can be set up in the phone's menu system to glow and pulse in a variety of colour combinations to suit your tastes. Even the more glam sounding "love", "fire" or "disco" aren't shockers, though - it's all quite subtle.

The lighting effects are carried over to the "Everchanging" default theme, which has a forest look and feel that changes gradually over time, from day to night and across days and months.

The navigation system on the S500i is typical Sony Ericsson; a central navigation pad and combination of softkeys and back buttons take care of the main routing, while additional fastkeys can slip you quickly into your most used functions.

The main navigation menu is an icon-based grid, although this can be converted to a carousel by tweaking the onboard themes. One nice touch is vibrating feedback when moving between main menu options. The extensive sub-menus are standard list based options, with tabbing to help you select categories.

In practice, the navigation pad can be somewhat awkward to use for the large-fingered, as the directional options are operated by pressing on the internal ring surrounding the central select button. Incidentally, the four-way navigation button can also be user-configured for fast access to three functions, with the "up" option pre-defined as a fastkey for the phone's camera.