Might be carrier specific where the icons are located.
On my VZW N4, the bluetooth icon moves around. If I have nothing open, the bluetooth icon shows up right next to my 4G icon. If I set an alarm, the bluetooth icon moves left and the clock icon sits next to my 4G. If I then open wifi, then the order, right to left is... 4G, wifi, clock, bluetooth.
Agree with Javier P above.. nothing to worry about.