1G stands for first generation and 2G stands for second generation are the 2 generations of mobile phones. 1G is that the 1st generation of mobile phones that brought 1st wireless communication to United States. … Difference between 1G and 2G. S.NO1G2G7.1G was launched in the year 1980.2G was launched in the year 1993.Difference between 1G and 2G – GeeksforGeeks www.geeksforgeeks.org › difference-between-1g-and-2g