Crossword clues for Telephone letters 4 letters:OPERTelephone lettersOPER0 letters, on a telephoneONESTelephone numbers without lettersONESTelephone buttons that lack lettersONETelephone button without lettersATTLetters on a telephone billONEIt lacks letters on a telephone keypadONETelephone button without any lettersONETelephone button that lacks lettersONETelephone key with no lettersONETelephone button that doesn't have letters