A logo of SK Telecom is seen during the World IT Show at COEX in Seoul, South Korea, Friday, April 25, 2025. (AP Photo/Ahn Young-joon) Seoul: South Korea's largest carrier SK Telecom started on ...

SEOUL: South Korea's largest carrier SK Telecom started on Monday (Apr 28) to replace mobile SIM chips for its 23 million users following a data breach, prompting alarmed customers to form long ...