Telecommunication generations

Generation	Technology	Introduced	Speed
1 G	Analog	1980	30kbps to 60kbps
2 G	Digital	1991	50kbps to 90kbps
2.5 G	GPRS	1995	80kbps to 100kbps
2.75 G	EDGE	1998	80kbps to 190kbps
3 G	UMTS	2001	150kbps to 250kbps
3.5 G	HSPA	2005	250kbps to 2Mbps
3.75 G	HSPA+	2007	250kbps to 7Mbps
4 G	LTE	2011	2Mbps to 14Mbps
5 G	Li-Fi	2020	70Mbps to 10Gbps