Iphone 4s & 5 problem with bluetooth

Hi,

I bought yesterday two Iphone 4s and 5 ios 6.0.1.  The bluetooth is enabled but does not find any device ( Iphone, MacBook Pro) . We are already the weekend and I can not get help from support.

I thought exchanging against other Monday, but first I would like to know if there is something I need to activate for the bluetooth working properly

Thank you for your help.

Elvis