What about the phone's eponymous LTE mode? I don't know. The phone's integrated 3G/4G circuitry, an overdue development, ought to help, and the AT&T version has drawn compliments for its LTE battery life. But Sprint won't turn on much faster Long Term Evolution access until mid-year, when it's due in Atlanta, Baltimore, Dallas, Houston, Kansas City and San Antonio. It aims to cover 123 million people by the end of 2012, 250 million in 2013.
Another Evo 4G LTE feature, higher-quality HD Voice calling, also awaits a Sprint network update beginning late this year. In the brief test call I heard at the CTIA trade show, HD sounded clearer but inferior to Skype or a CD.
The Evo's NFC (near-field communication) chip also looks underdone; the Google Wallet service it uses for tap-and-go purchases supports few merchants and fewer credit cards. And copying files from a Mac will remain tricky until HTC ships a promised OS X release of its sync software.
The optimistic way to read these coming-soon features - on top of such extras as a kickstand for table-top viewing, an FM radio users may never notice and Beats Audio sound that doesn't add much - is that this phone has enormous upside. Or you could just call it incomplete.