The main difference between 3G and 4G is the data rate . There is also a huge difference between 3G and 4G technology. The key technologies that have made 4G possible are MIMO (Multiple Input Multiple Output) and OFDM (Orthogonal Frequency Division Multiplexing). The most important 4G standards are WiMAX and LTE.
Read moreIs 4G better than 2G?
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 moreWhich is better 2G or 3G?
The primary difference between 2G and 3G networks for mobile subscribers is that they get to enjoy faster Internet browsing and data downloading on 3G . On average, the speed of data transmission on a 2G network is only 170Kbps, while in 3G networks the downloading speed can go up to 42Mbps (or 43,000 Kbps).
Read more