Help HTC One X - Extra Contacts and 2 small holes

[Actual]

The HTC One X has what appears to be a row of 5 contacts on the back of the unit. There is no mention in the user manual so does anyone know what they are for?

Also the HTC One X has 2 small holes on the edge of the unit. One is top left next to headphone socket and the other is bottom right. The holes are the size to insert a paperclip but I'm not going to try. There is no mention in the user manual so does anyone know what they are for?

 

[Baldilocks]

Those 5 ports are for a future charging dock or computer dock of some sort.

The bottom hole on the right is the microphone and the one on the top is the noise cancelling microphone.

 

[Harry2]

A dock will use this five contacts.

The tiny hole on the top is a microphone for noise compensation.

The hole on the bottem is the microphone for speaking, I think

EDIT: I see, Baldilocks was faster

Harry

 

[Actual]

So the HTC One X can make telephone calls too? Is there an app for that?