The phone view stays as simple as possible: not every desktop view belongs on it (the workspaces list, say, stays desktop-only). What it does show follows the desktop version: same controls, icons, button states and card layout, departing from it only where the small screen requires. A tap on a button while the keyboard is open does what the button does on the first tap; it never just closes the keyboard first.
Rarely used actions stay out of the way: shown only where they apply, behind hover or an overflow menu, so everyday use isn't cluttered with buttons. A button's label makes clear what it does to someone who doesn't yet know the use case.
Before UI work goes to the owner, look closely at screenshots of it for visual polish and fix what is off: text vertically centred with neighbouring buttons, enough padding to the edges of its block, controls (a remove ×, say) where the eye expects them.
Bold marks the new text in the sharpened bullet; grey is unchanged.