Related Clues:

• Send a message via cellphone
• Type with one's thumbs, say
• Cell-phone message that's typed
• Message containing emojis, perhaps
• Set up, as a gig
• Speech contents
• Word with work or play
• Reserve copy
• Tome or edition
• Reserve; volume
• Most crossword entries
• Reserve, as a room
• Android transmission
• Type 'how r u,' perhaps
• They serve sentences