The new fiber-optic cables will connect nine countries and be capable of speeds of up to 38.3 terabits per second, the Korean network says.
We get up close and personal with the special-edition 18kt. gold HTC One.
A government cap on carrier subsidies caused a steep decline in phone sales, although there are some signs of recovery as low-cost monthly plans and used phone sales are on the rise.
The iPhone numbers in South Korea top the preorders seen for Samsung's Galaxy Note 4 over a similar period, says the Wall Street Journal.
Carriers rejoice as the preorder window for Samsung's phablet has been cut short due to high demand.
The mobile-chip giant also unveils new software-development kits for LTE Broadcast and for its Vuforia augmented-reality software, designed for digital eyewear like Samsung's Gear VR.
Despite reluctance from three major carriers, creditors have agreed to extend Pantech's deadline for debt repayment by two years, keeping the South Korean company alive for the time being.
South Korea's Fair Trade Commission has forced the app stores to remove non-refundable clauses --and hopes the policy will become a benchmark for other countries.
The third largest phone maker in Korea continues to post losses while still owing debt to various entities, including Korea's three carriers.
The Samsung Galaxy S5 is on sale in Korea ahead of its official release date, and no one's more surprised than Samsung.