What is this icon on top of my HTC one?

[AC Question]

I got a HTC one and recently I have been seeing this icon on top of a semi circle tilted sideways with wifi bars going on and off on top of it. I am really confused, Could someone tell me what it is and add the symbol on their answer. Thanks.

 

[anon(632115)]

Please register and upload a screenshot. I can't make out the description.
Thanks

 

[anon(9983233)]

As a suggestion and future reference for others, Search Google using the image option & these key words etc:

"HTC Tool Tray Icons"

My search shows several sheets/list of possible icon matches.