On Android 7, when you pull down the top bar drop-down window (Quick Settings) a grid of 3x3 icons appears with tiles like Wifi, screen rotation on/off, Aeroplane mode etc.
On my new phone with a new SIM there is an icon called "No SIM card". What is this for?
I have a dual SIM phone with only one SIM card inserted, is it there to allow me to swap them? Is there anyway to get rid of it when I only have 1 card installed? Here is a screenshot: