5G has the potential to offer speeds up to 40 times faster than 4G -- fast enough to stream "8K" video in 3-D or download a 3-D movie in about 6 seconds (on 4G, it would take 6 minutes).

Unfortunately for consumers, there's a difference between lab experiments and reality. Peak speeds are fun to dream about, but in the real world, actual speeds are much slower than promised.

Nokia (NOK), one of the biggest 5G players, believes that its 5G technology will allow for real-world speeds of about 100 Megabits per second when the network is most congested -- that's about four times faster than 4G's top speed.

Another characteristic of 5G is that it will have ultra-low latency, meaning that it could drastically reduce the amount of time it takes for the network to respond to your commands. That could give the appearance of much faster loading websites, apps, videos and messages. (from cnn)