What does the U symbol at top left of the screen mean?

[AC Question]

what does the U symbol at top left of screen mean

I have three U or horseshoe type symbols at the top left of my screen, just above the Google symbol on the opening page. (KitKat 4.4). What do these mean, please?

 

[josiahlikesminecraft]

Re: what does the U symbol at top left of screen mean

Can you please post a screenshot?

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