Maxcom MM824 User Manual page 42

Quit, leaves the text input mode.
While creating a multimedia message, you can add:
Recipients
Message subject
Message content
Photos
Audio file
Other attachments: Text, Slide, Previous Slide,
Photo, Audio, Video
Important:
Polish diacritics (ą,ć,ę,ł,ń,ó,ś,ź,ż) take up more
memory, and therefore using them limits the number
of total characters you can send in a single text
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