External keyboard required. Google Sheets keyboard shortcuts on iPhone only activate with a physical keyboard connected.
Command modifier. Google Sheets on iPhone uses Command when a Bluetooth keyboard is connected, following iOS keyboard conventions.
Cell navigation. Moving between cells by arrow key and navigating within the spreadsheet are available with an external keyboard, making it practical to review and edit data without tapping individual cells.
Formula entry. Entering a formula, navigating within the formula bar, and confirming or canceling an entry are keyboard-accessible.
Basic formatting. Cmd+B, Cmd+I, and other standard formatting shortcuts work in the Sheets iOS app with an external keyboard connected.
Discovering shortcuts. Holding Command on a connected keyboard in the Sheets iOS app shows available shortcuts for the current context.