What is this icon?

[chuka101]

Just noticed this on my lG V10 this morning and haven't figured out what it is

 

[Rukbat]

Which one? You don't seem to have indicated any single one (or am I missing something?)

 

[belodion]

Which one? You don't seem to have indicated any single one (or am I missing something?)

If you are, so am I. I'll guess it's the M-like one top left. However, I don't know what it means.