Korean carriers SK Telecom and KT are in talks to offer LTE service for Apple’s next-generation iPhone, according to a new report. Citing officials from the companies, the Korea Times reports that any such deal could require a change or addition to the handset’s supported LTE frequencies. While Verizon operates its LTE network on the 700 MHz frequency and AT&T uses both 700 MHz and 2100 MHz, SK is using the 800 MHz frequency, and KT…