5G launches in the US and South Korea

Telecoms giants race to be first to bring out a commercial 5G service, but with very different approaches to the tech. Plus, what does a spike in the price of Bitcoin tell us about the market for the cryptocurrency. And the leading computer scientist Andrew Ng tell us discussions about artificial intelligence are too focused on killer robots and other far away threats when there are immediate issues to tackle. Presented by Rory Cellan-Jones with BBC tech reporter Jane Wakefield, and special guest Jemima Kelly from the Financial Times.

(Photo: Technicians from South Korean telecom operator KT check an antenna for the 5G mobile network on the roof of a building in Seoul, Credit: Jung Yeon-Je/ AFP/ Getty Images)