EASY TO USE. HARD TO LEAVE BEHIND. Doro 2404 is a dual SIM mobile phone for people who want easy menus and prefer a clamshell design to avoid accidental dialling. Direct keys and a widely spaced keypad make texting, calling and taking photos easier, and a built-in torch helps you find your way in the dark. Feel even more secure with the assistance button, and be alerted to missed calls.