Fans of rare and obscure handsets, this one's for you. Our man over at Mobile Crunch got his paws on the A533, a Helio-branded and modified version of the Samsung F400 that never made it to market. All told, he spent a few weeks with the device, and put the time to good use -- constructing a fairly comprehensive overview of this diminutive media-playing, slide-out-speaker-sporting, threaded-SMS supporting, tabbed browsing device. Choc full of photos, this is the hands down, must-read unreleased Helio post of the afternoon.

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