<Anchor>

It has been a year since Korea first commercialized the world's first 5G mobile communication '5G' service.

Meanwhile, 5G subscribers have surpassed 5.3 million, and reporter Sunghoon Lee has confirmed how much better 5G service quality is.

<Reporter>

Engineers wearing masks are busy checking 5G base stations.

[Idavin / KT 5G Quality Engineer: We do a lot of equipment investment or something like this to make it as comfortable as possible.]

As the controversy persisted from the 5G commercialization to the present, the three mobile operators say they have invested 7.8 trillion won a year to triple the number of base stations.

What about the level of satisfaction consumers feel?

[Lim Hyeong-seop / Seoul Gangseo-gu: When I commute, I lost a lot in the subway or something like this, but it's been a year, but I'm still using LTE priority mode.]

[Kim Hyun-hee / Seoul Gangdong-gu: There is no significant difference in the LTE experience, and there are places where it is not.]

Let's measure 5G speed directly in downtown Seoul where offices and commercial facilities are concentrated.

In the open air, the 5G signal is well captured, making it fast and seamless.

However, when you enter the room, the speed will drop as you switch to LTE mode.

As 45% of 5G base stations are concentrated in Seoul and Gyeonggi Province, marginalized areas will be created.

[Moon Eun-ok / Ministry of Social Welfare and Hope, Participating Solidarity: 5G radio wave has low transmittance due to its characteristics, so it requires more than twice the number of base stations compared to LTE. .]

Still expensive charges are dissatisfied.

There are only three types of plan data classified by the amount of data provided, and if you select the unlimited data plan, you will have to pay as much as 130,000 won.

[Lee Byung-Tae / Professor, KAIST School of Business: It's not a good idea to diversify your plans because you don't really use all of your data capacity and tend to use expensive plans. .]

Developing 5G-only content that will appeal to consumers remains a challenge.

(Video editing: Hwang Ji-young, VJ: Min-gu Jung)