S. Korea launches 5G networks early to secure world first

South Korea launched the world's first nationwide 5G mobile networks two days early, its top mobile carriers said Thursday, in a late-night scramble to be the first providers of the super-fast wireless technology.Three top telecom providers -- SK Telecom, KT, and LG Uplus -- began their 5G services at 11 pm local time Wednesday, despite previously announcing the launch date would be April 5.Hyper-wired South Korea has long had a reputation for technical prowess, and Seoul had made the 5G rollout