Are you thinking, 'How big can budget phones be?'? SKT's solid 50% line share is on the verge of entering the 30% range for the first time since 1994. 5 million subscribers to the three major telecom companies have defected and started using postpaid budget phone plans. In fact, the number of budget phone subscribers is increasing by more than 100,000 every month , and based on overseas examples, it is expected that more than 10 million customers will be using budget phones in the near future. Young customers in their teens to 30s are quickly switching to budget phones, and many communities are posting about/inquiries about budget phones. In addition to the increased competitiveness of plan prices, the spread of terminal self-payment systems, which have made it possible to buy smartphones (especially iPhones) without contracts, has also played a big role in the growth of budget phone users. The current prepaid phone penetration rate has doubled every year for the past three years, exceeding 30%, and more than 90% of budget phone users are using prepaid phones . As a result, a family of four who currently uses a budget phone can save at least 5 million won over a two-year contract period. They can use the latest flagship smartphone they want and maintain communication quality. There is no reason not to switch. And there is no reason for subscribers who have switched once to return to the three major telecommunication companies.