Possible Clues:

• Droids, e.g., for short
• Smartphone precursors, for short
• Handy data carriers (Abbr.)
• Pocket PCs, e.g.
• High-tech hand-held gadgets
• BlackBerry and others, for short
• Pre and iPhone
• Treos and iPhones, briefly
• Hand-held computers
• BlackBerrys and iPhones