T-Mobile adds more allure to its 3G phones with this latest from Sony Ericsson – the Sony Ericsson Equinox (earlier named T707). Otherwise a basic flip-phone in functionality, the Equinox carries some eye-catching bling to push itself to the limelight amongst the other established clamshell models in the market. First is the stylish exterior – after you update your T-Mobile favorites list with your caller friends’ circle, the shell lights up to indicate the identity of the caller in one of the five available colors. Say “amber” for good friend Joe and “amethyst” for avoidable Erica. I say, a thumbs-up for people with good memory, and more confusion for those without. Other than that, the external shell also contains an 128 x 36 OLED screen that functions only when you get an incoming call.