xperia z 1 - what is this port for?

[shlomob]

anyone have an idea what is this port for (in the red circle)?

[_alexdon_]

I think it is the secondary microphone.

[_alexdon_ · Accepted solution]

Indeed

http://userguide.sonymobile.com/referrer.php?region=global-en&product=xperia-z1#!Phone-overview---C6...