Audio Ads also enables advertisers to track when and where their ads ran soon after the fact, providing them with a faster and more accurate way of tracking their spots than the usual invoices they receive via snail mail.

FORBES

The Optimus 4X HD provides white background for the e-mail and message screen that users frequently use and True HD IPS allows for more accurate reproduction of white that enhances readability.

ENGADGET: LG's Optimus 4X HD officially making its way to European locales June 11 (update)