A Seoul YMCA consumer watchdog called on LG Uplus to waive cancellation fees as the company replaces all USIM cards amid a controversy over its International Mobile Subscriber Identity system design. It said demonstrations by experts showed security threats linked to poor IMSI management becoming real. It cited cases shown at a KAIST hacking conference and online communities. It urged immediate user notifications and asked the science ministry to issue administrative guidance on fee waivers.

In the second week of April, sibling duo AKMU returned with its fourth full-length album \"Flowering\" and drew strong reactions to its new music video. Project group WANNA ONE announced a paid membership tied to an upcoming reality programme and member Kim Jae-hwan drew attention for messaging fans before the service opened. tvN said it will reorganise its planned anonymous debate show. Korean action titles including \"Hounds\" season 2 and film \"Humint\" ranked highly on OTT charts.