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South Korea\'s top three mobile carriers\' R&D spending share led by SKT, followed by KT and LG Uplus

R&D spending as a share of sales at South Korea’s three mobile carriers in 2025 was highest at SK Telecom, followed by KT and LG Uplus, a filing showed. SKT’s share fell from a year earlier despite the largest outlay. KT sharply increased R&D spending, narrowing the gap with SKT. LG Uplus remained the only one below 1 percent. The firms focused R&D on AI and network upgrades, and differed in how they accounted for R&D costs.