I do not have any Bluetooth devices, I have never turned it on.
In my GS4 under Settings > More > About device; there is an user editable field called "Device name". I can edit that to something to something like "Nid Moto X" then I can plug my GS4 to any PC and it will shows "Nid Moto X" without have to rename from XT1058 on every PC I plug my device in to Nid Moto X. But there is no such an option on my Moto X.
Well, it is what it is. I guess this is what you paid to have almost pure Android OS device.
Yes, I did renamed the nickname on the play store but that is not what I am after. Thank you for all of the info.