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KT enables 3 hours and 49 minutes of additional usage with Galaxy S9 battery saving technology

Google 우선 소스Published2018.03.12 11:19
Up to 55% increase in usage time with battery saving technology
Technology that periodically switches communication functions to low-power mode


KT announced that it has optimized the battery saving technology (Connected mode Discontinuous Reception, hereinafter C-DRX) applied to its nationwide LTE network and increased smartphone usage time by up to 55%.

KT confirmed that data usage time increased by up to 55% as a result of testing the battery saving effect using the Samsung premium smartphone Galaxy S9 model at the Korea Information and Communications Technology Association (TTA), an ICT standardization and testing and certification organization. As a result, KT LTE subscribers can now enjoy increased data battery life without the need for a separate device upgrade.



As a result of testing using the same service (YouTube video streaming) continuously in the same environment, the Galaxy S9 without C-DRX applied lasted for a minimum of 7 hours and a maximum of 7 hours and 50 minutes, whereas the Galaxy S9 with C-DRX applied lasted for a maximum of 10 hours and 49 minutes.

C-DRX is a technology that maximizes battery life through network technology rather than physically increasing battery capacity; it reduces battery consumption by periodically switching the smartphone's communication functions to a low-power mode while connected to data.

In existing network environments, communication between the smartphone modem and the carrier base station continued without interruption during data usage, whereas in a C-DRX environment, battery consumption can be reduced by optimally shortening the data transmission and reception cycle.

Kim Young-sik, Executive Vice President of KT INS Headquarters, stated, “The battery saving technology, which was first applied to the nationwide LTE network in Korea in the first half of 2017, has become even more powerful through this optimization work following the nationwide voice call network,” adding, “We will continue to realize differentiated customer satisfaction through KT’s excellent innovative technology.”
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