Unknown icon in status bar

[Mito57]

Hi everybody. New to the forum and here's my first question.

What is the rectangular icon on top left? Just appeared. I've attached a screenshot.

 

[UJ95x]

Welcome to Android Central Have you downloaded any apps recently?

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[Mito57]

Well, I soft bricked my phone two days ago and had to re-flash the stock ROM.
Everything I had was re installed when I logged on to Google play after I did a factory reset so yes, installed a lot. I guess is from one of the apps. Just cannot figure out which one. I'm hoping somebody knows. The icon looks like some kind of list.

 

[Mito57]

Figured it out. It was "My Data Manager". I removed it from the app's settings. Thanks.

 

[UJ95x]

Figured it out. It was "My Data Manager". I removed it from the app's settings. Thanks.