One smartphone by HTC Corp.
$199.99 from AT&T Inc. with two-year contract.
$99.99 plus $20 a month for two years or single payment of $579.99 from T-Mobile USA
$99.95 for new customers or $199.99 for renewing customers from Sprint Nextel Corp. with two-year contract.
PRO: Sleek, thin smartphone powered by muscular quad-core processor; rich new user interface with live updates from social networks; outstanding high-resolution camera.
CON: No slot for adding more memory; built-in battery can’t be swapped.