A method and device to simplify message reply composition on a communications device, using a partially transparent overlay to allow a user to freely scroll and move around to other sections of a message or message chain while still being able to see and edit the reply being composed. When the reply is scrolled such that the composition field is not visible on the display screen, the device displays the overlay when the user enters text or on user request. The user may then type text into the overlay while viewing the underlying portion of the reply message, such as previous messages in the string.