South Korean iPhone carrier KT has said it plans to begin to take pre-orders for the iPhone 4 later this week. AFP reports that KT will be accepting pre-orders both online and in its stores beginning Wednesday. “We hope the iPhone 4 will draw a hot response from clients as the iPhone 3 did,” KT said in a statement, adding that it would hit the market some time in September. Apple has sold more than 850,000 iPhones in South Korea since…