from The American Heritage® Dictionary of the English Language, 4th Edition
- n.pl. Nonessential features or enhancements intended especially to add commercial appeal.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Extra features added for show rather than function; fancy additions or features.
Sorry, no etymologies found.
And since most of the phones are engineered to break after a couple years, it seems ridiculous to turn down their offer for a sparkly new model with all the latest bells and whistles and risk having the old one break midcontract, when replacement phones are much pricier.