The carrier's new iPhone app allows business users to communicate with large groups of people via a Wi-Fi or cellular connection.
A total of 46 patents were approved Tuesday, but whether the technologies will find their way into an Apple product remains to be seen.
The Windows Phone-powered Lumia 640 joins the prepaid GoPhone roster, while the rugged Sonim XP5 bolsters AT&T's tier-one portfolio.
The rugged flip phone will feature a rubberized casing to help protect it from the elements, and enhanced push-to-talk capabilities.
AT&T launches a trial program to test out its enhanced push-to-talk feature for mobile field service workers.
The mobile phone maker gears its first "walkie-talkie" phone to the fitness-conscious. It has a push-to-talk feature and camera and is due out by mid-2004.
After years of hinting iDEN was on its way out, Sprint finally announced today that it would end Nextel's IDEN network for push-to-talk service by 2013.
In an interview Sprint CEO Dan Hesse said the carrier is moving toward shutting down the iDEN network it inherited form its 2005 purchase of Nextel.
Nextel Communications has had a lock on the enormously successful walkie-talkie cell phone feature, but competitors are looking to change that.
Sprint announces the immediate availability of the Motorola i890, a sleek Nextel Direct Connect handset with enhanced multimedia capabilities.