The Z610i also has an external display that's hidden away underneath the shell; however, it's a monochrome display unlike the KRZR's. But even then, it does look better since you can't see the edges of the display; you only see the text from outside. Also, text is more legible on the Z610i's mono display compared to the KRZR's color display.

Functionally the Z610i has almost exactly the same spec as the K610i. The Z610i has a clamshell form factor and good-looking glossy looks, but the K610i has the promote of being one of the lightest 3G phones ever made. It does have a leaning to freeze or shut down, so be warned.

The Sony Ericsson Z610i is a hot little number that will turn heads. Available in blue, black and for a limited time pink, the Z610i's clamshell design comes with a sleek mirror finish. On the front of the phone is a simple 128x36-pixel OLED screen that lights up when users receive an SMS or phone call, which is a handy feature for those wanting to screen calls from editors wondering where a review for this phone has got to.

The user can take part in a conference call which allows the user to talk to more than one contact per call. The come with a vibrating alert which is easy to set when the user is in a meeting or situation where they require a shuddering alert rather than sound alert. The Sony Ericsson Z610i comes with a running away mode option which allows the user to use certain features whilst they are in a restricted area such as on a flight or in a hospital. The user can have a fun 3D gaming experience on their Z610i which is a lively & exciting way to game.