https://tech.newstatesman.com/emerging-technologies/south-korea-5g

Mobile operators preparing to launch 5G services this year have expressed concerns that the value of the high-speed technology to consumers may not be clear or strong enough to justify the expense of its deployment. However, early indications from newly launched 5G networks in South Korea suggest that their increased speeds and lower latency are already changing customer behaviours and driving adoption of new services and use cases.

Mobile operators in South Korea were the first to launch 5G services on the global stage, beginning in April. Less than two months later, the early results are encouraging with over 1 million total 5G customers signed up already: