The icons in a phone's status bar and an application's toolbar. Grouped because almost none of them is defined by anybody: the magnifying glass means search everywhere and no standard says so, signal bars map to signal strength by each manufacturer's own choice, and the share icon exists in two unrelated drawings that mean the same thing. They are among the most widely recognised symbols in the world and among the least governed, and the group is where that contrast is legible.
A small aeroplane silhouette, marking the setting that disables a device's radios.
A wave-like mark of curved strokes, indicating a near-field communication point.
Four arcs of increasing size, marking a card or terminal that supports contactless payment.
A trident of three branches ending in a circle, a triangle and a square, marking a USB port.
A flattened oval outline, marking a USB Type-C port.
A square block of black and white cells with three large squares at its corners.
One or two arrows curving into a near-closed circle, indicating reload or synchronisation.
A magnifying glass: a circle with a short diagonal handle.
Three dots joined by two lines, or a box with an arrow leaving it, marking a share action.
A downward arrow, usually above a horizontal bar or an open tray.
An upward arrow, usually above a horizontal bar or an open tray.
A rounded cloud outline, standing for a remote service or remote storage.
An upward triangle above a horizontal bar.
A rectangle with a small nub at one end, filled in proportion to the charge remaining.
A row of bars of increasing height, showing received signal strength.
A toothed wheel, marking a control that opens settings or preferences.