In a nutshell the difference is SPEED. The G in 2G, 3G and 4G stands for Generation, and they refer 2nd, 3rd and 4th generation of wireless technology. The newer generation is faster, more secure and more reliable .
Read moreIs 2G fast enough to stream?
2g connection speed ranges from 20-40kbps . With this kind of speed, you could use applications which does not require higher bandwidth. You could use WhatsApp and other basic messenger apps, you could browse basic websites with simple code, say Google.15 Eyl 2015
Read moreDo I need 2G on my phone?
If however you mean a user of a low cost voice only phone and your national coverage only has 3G and 4G in cities then 2G is essential . Finally, if you are an IoT (Internet of Things) integrator then you might still be using GPRS only modules and so 2G is the only network tour devices can use.
Read moreWhat is 2G best for?
Ideally, you should use the 2.4GHz band to connect devices for low bandwidth activities like browsing the Internet . On the other hand, 5GHz is the best suited for high-bandwidth devices or activities like gaming and streaming HDTV.
Read more