What does "HF" underneath some of my app icons mean?

[KatJD13]

Below several of my app icons/widgets there is an HF inside a circle with some tiny letters below that. What does itmean mean????

 

[Javier P]

Welcome to the forums. What phone do you have? Where are those icons, on your home screen, app drawer or in the app manager? Could you post a screenshot so we can have a better idea?

 

[Thiago Souza]

I can't see nothing on your screen.
I new snapshot (with model phone) maybe will helpful.
I suppose (without seeing image) than its reffer to same company in Games folder.

 

[B. Diddy]

Welcome to Android Central! I can see the screenshot. What other apps have that icon? If you go to Settings>Apps and look at those apps, are there any odd characters in place of those icons? I'm wondering if the official name of the apps includes some non-English characters that get replaced by that odd icon.

 

[Thiago Souza]

Welcome to Android Central! I can see the screenshot. What other apps have that icon? If you go to Settings>Apps and look at those apps, are there any odd characters in place of those icons? I'm wondering if the official name of the apps includes some non-English characters that get replaced by that odd icon.

I agree with B. Diddy said.
I was looking again to image and see a "oriental game" named mahjong.
I don't know why occurs but that's a beginning.
Try reinstall the game.