Help Whats the hole on the left side?

[rahumel]

Okay i Know this a dumb question but its bothering me, I've searched online and everything but i cant figure out what the hell is the hole on the left hand side above the volume rocker.

 

[Hadesanubis]

its for a lanyard connection if you take the back off you can see a spike to put the lanyard around

 

[SvenVanBro]

First time I saw people use this feature was when I was in Okinawa, Japan! I swear everyone there had some sort of lanyard hanging on their phones!