SEOUL, April 4: South Korea’s three mobile carriers and top U.S. telco Verizon Communications commercially launched 5G services on Wednesday, ahead of their initial schedules, as they rushed for first spot in the race to roll out the latest wireless technology.

WASHINGTON, Feb 28: While Washington's concerns that future 5G wireless networks could be vulnerable to spying by China have dominated headlines, businesses have long been pushing to make sure the technology is as secure as possible.