Just recently, I have noticed an icon that has an arrow pointing up and an arrow pointing down appear for a split second after I unlock my phone. It goes away so fast I can't get a screenshot. What is this icon? What does it mean?

My phone is a Nexus 5x with Marshmallow 6.0.1.

  • It sounds like a wifi activity widget. Did you download one of those data monitors on another device with your Google credentials linked and it automatically installed on your 5x without your knowledge? Commented Feb 2, 2016 at 2:12

1 Answer 1


Turns out it was the app Signal Spy. It shows an up/down arrow while it is inspecting what your signal looks like.

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