Nordmende LITE400F User Manual page 21

If the short message memory is full, a blinking message icon
appears on the top of the screen. To normally receive short
messages, you need to delete some of the existing short
messages.
Write message
Through this function, you can create a new text message. You
can type a message, and you're also able to insert a pre-defined
message from "Templates"
Inbox
Received messages are listed in this menu.
Outbox
Messages sent failed are stored in this item.
Drafts
Draft messages are listed in this item.
Sent box
The messages which are sent successfully are stored in this
menu.
Templates
You can create pre-defined messages in this interface.
USER MANUAL | page 21