The globe Phone Evolution, it changes from 1G to today 4G:
1G development sine 1981 with line concept use. It can transfer our voice but not for data sending
2G developed sine 1992, the first digital phone without wire concept. It cost some of US 1,800 dollars in Cambodia sine 1993!.
3G, the third generation of phone development without wire needed. Their tools are less for voice and data transmission. It founded sine 2001.
4G, the fourth generation without wire line. Their tools are greater for voice and data transmission.It circulated in public market by 2005
1G development sine 1981 with line concept use. It can transfer our voice but not for data sending
2G developed sine 1992, the first digital phone without wire concept. It cost some of US 1,800 dollars in Cambodia sine 1993!.
3G, the third generation of phone development without wire needed. Their tools are less for voice and data transmission. It founded sine 2001.
4G, the fourth generation without wire line. Their tools are greater for voice and data transmission.It circulated in public market by 2005
