Understand the Mobile data Speed : 2G ,G,H,E,3G and so on....

Have you ever noticed a ICON on Top of your mobile phone when you are browsing internet over smartphone or any feature phone that has internet connectivity. Based on your phone specification you have various symbol like G ,2G,3G ,H etc. Now let understand what this symbol actually means

ICON	Standard	Full Form	Max Download Speed ( Theoretical Limit Only)	Max Upload Speed(Theoretical Limit Only)
2G	GSM	Global System for mobile Communication	14.4Kbits/s	14.4Kbits/s
G	GPRS	Genral Packet Radio Service	53.6 Kbits/s	26.8 Kbits/s
E	EDGE	Enhanced Data rates for GSM Evolution	217.6 Kbits/s	108.8 kbits/s
3G	UTMS	Univeral Mobile Telecommunication System	384 Kbits/s	128 Kbits/s
H	HSPA	High-Speed Packet Access	7.2 Mbits/s	3.6Mbits/s
H+	HSPA+	Evolved High Speed Packet Access Release 6	14.4 Mbits/s	5.76 Mbits/s
H+	HSPA+	Evolved High Speed Packet Access Release 7	21.1 Mbits/s or 28.0Mbit/s	11.5 Mbits/s
H+	HSPA+	Evolved High Speed Packet Access Release 8	42.2 Mbits/s	11.5 Mbits/s
H+	HSPA+	Evolved High Speed Packet Access Release 9	84.4 Mbits/s	11.5 Mbits/s
H+	HSPA+	Evolved High Speed Packet Access Release 10	168.8 Mbits/s	23.0 Mbits/s
4G	LTE	Long Term Evolution	100 Mbits/s	50 Mbits/s
4G	LTE-A	Long Term Evolution- Advanced	1Gbits/s	500 Mbits/s