iPhone’s sole carrier in South Korea, KT Corp today announced that tens of thousands of people jammed its website on Wednesday, as the company began to take pre-orders for the new iPhone 4. In less than 9 hours 110,000 people pre-ordered the handset before KT’s website completely went down.

“Our online shop server was jammed instantly as too many clients placed orders simultaneously,” KT spokesman Jin Byung-Kwon said. “So far, the number of orders for the iPhone 4 exceeds well beyond that of the iPhone 3GS. We didn’t expect so many people to preorder the iPhone 4 in such a short time.”

iPhone 3GS did become the number one selling smartphone in South Korea on launch last year. And it looks like iPhone 4 will easily surpass that.