When 5G services launched here in April, Jang Dong-gil was among the first wave of South Koreans to sign up.
Now eight months in, Mr. Jang, a 30-year-old tech company worker, has a chilling review for the next-generation technology: 5G hasn’t lived up to the hype.
“I don’t feel the difference,” said Mr. Jang, who uses a 5G-enabled Samsung Electronics Co. handset. On many days, he said, he switches off his 5G service altogether because his connection often drops as his phone pingpongs between 5G and the existing 4G LTE network....
