Weather forecasters think parts of the 5G network could interfere with meteorology communications.Read more
Campaigners in Stroud want to halt the roll out of 5G technology, over health and environmental concerns.
They have started a 'Stop 5G' campaign which is calling for independent safety checks to be carried out into possible radiation.
The roll out of 5G will begin this summer in big cities like Birmingham, London and Bristol, before moving to other areas of the UK.
It's being trialled at Glastonbury festival this week, but more than 3,000 campaigners have also signed a petition for that to not go ahead.
Residents of Glastonbury town have also expressed concerns over 5G. Glastonbury council is looking into it and has voted against the introduction of 5G in the town for now.
The Trump administration is looking into the possibility of requiring that the 5G equipment used in the US be made outside China, the Wall Street Journal has reported.
It comes as the US has encouraged allies to block Chinese tech giant Huawei from their 5G networks, saying the Chinese government could use its products for surveillance.
In May, the US added Huawei to a list of companies that American firms cannot trade with unless they have a licence.
BBC Radio Jersey
A Jersey senator wants the island's 5G services to be controlled and allocated by a government company
5G is a service that allows you to get faster internet access on your mobile - and Senator Sarah Ferguson is concerned about the way it will be implemented.
She believes States-owned control will be better for phone users in the island, because the government would be able to regulate competition.
The senator wants the chief minister to come forward with a complete telecommunications strategy for the island that can be debated by the States.
BBC Midlands Today Special Correspondent
The 5G mobile phone network was used for the first time in the UK today, to show how the new technology can help the NHS to transform the lives of some patients.
A remote controlled ultrasound scan was performed live on the public network.
Paramedics will soon be able to relay video of a patient back to a surgeon miles away.
The senior clinician from Queen Elizabeth Hospital in Birmingham was linked to a paramedic in a mock-up of an ambulance.
The 5G coverage is set to improve, with emergency services getting priority access.
BBC Radio Guernsey
A former risk-assessment worker in Guernsey wants a full debate on the health risks that 5G internet might pose, before it's rolled out locally.
David Green said he's sure 5G will cause bad health to islanders.
He said it's not about picking sides but rather consulting with doctors, scientists and locals on whether the new technology is worth it.
According to some national service providers, 5G will offer download speeds as much as 100 times faster than existing 4G networks in the UK.
Some people have questioned whether there are health risks from 5G, but experts and regulators say there is no evidence of danger.
Similar fears were expressed around earlier mobile internet and wi-fi.
More than 200 scientists appealed to the EU to halt the rollout of 5G, saying that electromagnetic fields may be harmful to humans and the environment, and could increase cancer risks.
But the EU said exposure from 5G will be far below limits set by the International Commission on Non-Ionizing Radiation Protection.
Guernsey's government will debate the rollout of 5G before the end of 2019.