Wireless-communications vendors Intel Corp., Nokia and Nokia Siemens Networks announced that they have begun testing Intel’s WiMAX silicon for use in laptops and mobile-Internet devices, Nokia’s WiMAX devices and Nokia Siemens Networks’ WiMAX infrastructure equipment in Sprint’s Herndon, Va.-based testing labs. Nokia also will use Intel’s WiMAX silicon product in its upcoming Nseries Internet Tablets, a multimedia computer platform that is based on the open-source Linux operating system that enables broadband Internet access on hand-held devices.