GSM (Global systems for Mobile Communication), bands for Phase I and II operates respectively at: 93. GSM (Global systems for Mobile Communication), bands for Phase I and II operates respectively at: A. 900 MHz and 1800 MHz B. 900 MHz and 2100 MHz C. 1800 MHz and 2400 MHz D. 1800 MHz and 2100 MHz Answer: Option A Previous yr Question papers with Full Explanations → Parent Topics UGC-NET