The Nokia 6600 fold is a dual-display phone coming out this year.

nokia 6600

240 x 320 pixels, 2.13 inches
3G
2nd external, hidden OLED display (128 x 160 pixels), 1.36 inches
18 MB internal memory
up to 8GB storage via microSD card
2 MP, 1600×1200 pixels, video(VGA@15fps), flash
secondary VGA video-call camera
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