What is 2G,3G and 4G,have you information about it....?

Many people are here,who not know about the 2G,3G,and 4G technology,well 2G is a old internet system and todays which is only use in pakistan and this system is only for cell phone,or we can say mobile phone,and 3G is a latest technology for all the people and it launched in many countries,but in pakistan people are still waiting for this technology,and 4G is the faster technology from all and in U.A.E ,saudi arab,and in other rich countries people are using this new and faster technology,well pakistani people will now also use 3G and 4G soon,pakistani latest mobile company zong launched 3G in many cities and people are enjoying this,and telenor and moblink also doing fast  work for this,well we think this is the best and good technology for pakistan,well other most rich countries are using 5G and now they will launch 6G and 7G,which in the very  fastest internet of the world and people will se everything online in seconds and people can download everything in few seconds because 6G and 7G is fastest net from the all,and we think it will soon launched on india and philpines and other countires,well 3G is also working good in philpine and people are happy,we dont know why 3G is working in huge cities and town cities 3G is still not working and people are upset for this and they thinks that it will not work there,well we says dont worry 3G will work soon all the cities and rich and poor everyone will enjoy soon....