Facebook Inc. is working with mobile-handset manufacturer INQ Mobile Ltd. on two smartphones that may be carried by AT&T Inc., according to three people familiar with the matter. The devices, which will feature Facebook social-networking services, are due to be introduced in Europe in the first half of 2011 and the U.S. in the second half, said one of the people, who asked not to be identified because the plans haven’t been made public. AT&T, the second-largest U.S. wireless service provider, is still considering whether to carry the devices and hasn’t made a deal, another of the people said. – from Bloomberg