Vodafone 5G launch will not just cover major UK cities but also Cornwall and the Lake District.
Researchers in Finland are looking into the next generation of connectivity, with speeds of up to 1Tbps.
Ofcom gives government technical advice, but any move to introduce national roaming would meet resistance.
Brexit secretary Dominic Raab says operators would be capped in what they could charge for EU roaming
Analysis Mobile operators hope the new iPhones will boost sales, but it's the eSIM that will have the greater long-term impact.
Ericsson offers customers new features, such as spectrum sharing, and partners with Juniper, ECI Telecom and Sprint.