The first frequency bands should come into use around 2020. The other two should be hot on its heels.
But other countries could have trial networks up and running even sooner.
Samsung wants to run a trial 5G network during the 2018 Winter Olympic Games. Huawei could also have one ready for the 2018 World Cup.
4 It won't breakv
Experts predict it will be as reliable as a fibre broadband connection.
That's thanks to advances in antenna technology, which should – fingers crossed – mean an end to connections dropping out.
Which is reassuring, if it's going to be piloting our driverless cars.
It's predicted 5G will have a latency of just one millisecond – that's 50 times faster than 4G.
That should mean it's suitable for use by robots carrying out millimetre-accurate surgery on patients.
Again, good job it will be more reliable
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