—O2 details pay-as-you-go iPhone 3G price and release date: O2 plans to begin selling the iPhone 3G without contract on a post-paid subscriber basis on Sept. 16, Stuff.tv reports. The 8GB version will sell for $623 and the 8GB version will go for $713 – both of which include free Wi-Fi and unlimited 3G browsing for the first year, a deal that can be extended for $18 a month thereafter. One caveat: visual voicemail isn’t included on under the Pay As You Go arrangement.

—*AT&T* gets exclusive content from Nelly’s latest album: Weeks before Nelly’s Brass Knuckles album drops Sept. 16, AT&T (NYSE: T) will deliver exclusive content from the album on mobile, U-verse TV and the blue room online. The offering, which goes live tomorrow, will include ringtones, a live webcast and on-demand content for television and mobile phones. Wireless subscribers will get early access to exclusive ringtones from the album and four full-track downloads from the album on Napster (NSDQ: NAPS) Mobile and Napster To Go. (Release).

—Phonevalley expands into Russia: Mobile advertising firm Phonevalley has launched operations in Russia, Wireless Week reports. Russia’s economic boom and growing consumerism led the company’s decision to expand into the country. Phonevalley was acquired by Publicis Groupe last year and has offices scattered throughout the U.S., Asia and Europe.