No idea but I haven't seen one in six months of use. | Hacker News

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recoiledsnake on Oct 26, 2011 | parent | context | favorite | on: Nokia announces the Lumia 800, the 'first real Win...

No idea but I haven't seen one in six months of use.

shrikant on Oct 26, 2011 [–]

I could be wrong, but I think that would be the proximity sensor at work.

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