5G is expected to have a transformative effect on digital connectivity and power the rise of IoT devices, driverless cars, data transfer and the consumer tech of the future.
It has also been a key battleground in the fight for global supremacy between the USA and China, as the controversies over Huawei's role in 5G infrastructure has demonstrated.
The UK's development of 4G fell behind many of its European neighbours, but progress on its successor has been more positive, and 5G is set to be launched in the UK in 2019.
Here's our history of the development of the mobile wireless standard, from the 1979 launch of 1G in Japan to today's controversies over Huawei's involvement in the UK's 5G infrastructure.
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