Lights on top and bottom of the Note 5??

[O3jetta87]

I've been trying to figure out what the little gray bars are on the top and bottom of the Note 5. There's one in each corner, by the sim card, the headphone jack, the s pen, and the top right corner. Not having any problems, just wanna know what the hell they are. Thanks in advance.

 

[ratsttam]

Those lines are the breaks in the metal body for the antennas.