What does this icon means?

[AC Question]

What this icon means?

it is like rectangle with zigzagged left and right sides. Never saw it before. It appeared today in the system notifications.
Phone = OnePlus One

Thank you

 

[B. Diddy]

Re: What this icon means?

Welcome to Android Central! Show us a screenshot: http://forums.androidcentral.com/am...ide-how-post-screenshots-android-central.html