Verizon will launch the 4G GalaxyTab July 28; AT&T will sell the LG Thrill for $99

Quick news from across the web.

@FierceWireless: RT @CNETNews: Study: iOS, Android users average $14 per in-app buy. Article | [email protected]

> LightSquared said it will invest in next-generation push-to-talk technology for public safety. Release

> Verizon Wireless and Samsung Mobile announced that the Samsung Galaxy Tab 10.1 with 4G LTE will be available July 28. Release

> The San Francisco Board of Supervisors will vote tomorrow on amended legislation that would require retailers to provide information on cell phone RF exposure to consumers. Article

> AT&T will sell the LG Thrill 3D smartphone for $99. The device will be in the company's retails stores in the coming weeks. Article

> InterDigital filed a complaint with the ITC claiming that Nokia, Huawei and ZTE have engaged in unfair trade practices. Release

> HTC said that its chief innovation officer, Horace Luke, has left the company for personal reasons. Article

> Alvarion reported second quarter revenue $55.4 million, an increase of 13.1 percent over first quarter. Release

> ARM Holdings reported a 21 percent rise in net profit of $43.2 billion, buoyed by smartphone chipsets. Article (sub. req.)

Mobile Developer News

> The creators of the Firefox Web browser have started developing an operating system for mobiles and tablets. Article

> Apple seeded iOS 5 beta 4, the first version of the software, to arrive via over-the-air update. Article

> Socialize unveiled a new SDK enabling iOS and Android programmers to add in-app social networking layers to their new and existing applications. Article

> Lodsys amended a lawsuit alleging that iOS developers are violating its IPR by implementing in-app purchase options within their iPhone and iPad solutions. The lawsuit now includes five additional companies, including Rovio. Article

> Experienced gamers know it's virtually impossible to win without a sound strategy. The same logic applies to game developers, and in mobile, there's no strategy sounder--or more lucrative--than the freemium model. Commentary

Mobile Content News

> Adobe Systems is shutting down its InMarket and AIR Marketplace application portals. Article

> Booksellers and Barnes & Noble have removed e-book purchase options from applications optimized for Apple's iOS mobile operating systems. Article

> Both e-book retailer Kobo and The Wall Street Journal will no longer sell content directly to consumers via their iOS applications. Article

And finally... A team of researchers say they have proven that time travel is impossible. Article