What is the plus or minus symbol at the top of my one plus one phone?

[AC Question]

It looks like a plus or a minus sign in a circle and it's just appeared now I've updated my phone

 

[chanchan05]

Screenshot please?

 

[Claude Speed]

It looks like a plus or a minus sign in a circle and it's just appeared now I've updated my phone

It's Do Not Disturb (it's moved from the Volume controls to the Quick Settings)

 

[One khan]

Moto e4 plus