Multiple choice technology what is the frequency range for mobile-communication(GSM-2G)? 900-1800MHz 100-1200MHz 750-1000GHz 12-200GHz Reveal answer Fill a bubble to check yourself A Correct answer Explanation GSM (2G mobile communication) primarily uses 900 MHz and 1800 MHz frequency bands globally. These bands are well-established standards. Options C and D use GHz (wrong unit), and B is incorrect in both frequency and unit.