They converted a lot of telephone booths to kiosks which have free chargers built in and usually also free wifi, calls, and defibs. https://arstechnica.com/inf

They converted a lot of telephone booths to kiosks which have free chargers built in and usually also free wifi, calls, and defibs. https://arstechnica.com/information-technology/2017/06/bt-ad-stuffed-free-wi-fi-links-service-london/ https://arstechnica.com/information-technology/2017/06/bt-ad... (old article, they're in a lot of major cities now and have been for a long time)