"The first mobile phone to use a dual-core processor is the LG Optimus 2x, which was first made available to the public nationwide in South Korea, on 25 January 2011."
The first dual-core processor smartphone in the United States, however, was the Motorola Atrix 4G that was released on March 6, 2011. The U.S. version of the LG Optimus 2x, the T-Mobile G2x, was released online on April 15 and received excellent reviews and two Editors' Choice Awards.
Pedro Matias of Portugal earned the Fastest typing on a smartphone Guinness World Records title in front of a global audience, in a time of 1 minute 59.8 seconds.
Guinness World Records also reported that PepsiCo's Frito-Lay division set a new Guinness World Records title for the "Most Fans on Facebook in 24 Hours," garnering 1,571,161 new "likes" (i.e. "fans") on April 11, 2011.