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The Fin is Helio's first clamshell phone.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks

Presumably to maintain the phone's slender figure, the Helio Fin has a tiny OLED as its external screen.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks

The Helio Fin is only 0.45-inch thick, making it the thinnest clamshell in the country at the time of its release.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks

The Helio Fin comes with a 3.0-megapixel camera lens above the screen. However, there's no self-portrait mirror or flash.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks

The Helio Fin may be thin, but it is a wide and long phone as well.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks

The Helio Fin has a beautiful screen and a wide but flat keypad.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks

The Helio Fin has a truly flat keypad, with no textured difference between each key.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks

The Helio Fin is slim enough to fit easily in a purse or pocket.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks

The Helio Fin has a microSD card slot inconveniently located behind the battery.

Updated:Caption:CNET Reviews staffPhoto:Corinne Schulz/CNET Networks
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