What is the butterfly new button on my Meizu phone?

Yesteday, a butterfly sign apeared in my main screen. Looks like a new button. 

Does anyone else has it in his Meizu?

Im afraid it might be a virus....

Hi Tal. Can you show us a screenshot? Or have you tried pressing the button? Remember the last app you updated, maybe that's where the new button came from.

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Are you on the best cell phone plan?