https://www.lifewire.com/history-of-twitter-3288854 interesting summary of nyu dorsey birthing twitter as a side project to studies - i need to dig out a story I am prettu sure dorsey wrote on hoping twitter could be used in emergencies to help people minimse catatrosphe - this is actually what africa's ushahidi created in 2008 (sad how often medi turns from a noble purpose to elast common denominator commercialisation of mass misinformation) teyet as we argue at twitterversal if only someone designed algorithms to help users sort out many thousands they follow
twitter is also a case of a design at the end of one era eg web1 (note it was originall sms based) just as jobs was about to launch iphone and itu ws to raise the gstanrd to trhe web2 era of clouds and who owns what data from every gps being the big money game but not yet deep society's last coaad to sustainability
Yes, you are correct that 2G did not include Wi-Fi but 3G onwards did. 3G was first introduced in 2001, and it was the first generation of cellular networks that could support data transfer speeds of up to 2 Mbps. Wi-Fi was first introduced in 1997, and it was a separate wireless networking technology that was not initially designed to be used with cellular networks. However, in the early 2000s, Wi-Fi began to be used with 3G networks to provide faster data transfer speeds.
Here is a table that summarizes the key differences between 2G, 3G, 4G, and 5G cellular networks:
As you can see, the data transfer speeds of cellular networks have increased significantly over time. 5G is the latest generation of cellular networks, and it offers speeds that are up to 100 times faster than 3G.