Just the usual issues with it not connecting, randomly disconnecting, audio buffering issues and so on. These usually get worse when you go into really busy pla

Just the usual issues with it not connecting, randomly disconnecting, audio buffering issues and so on. These usually get worse when you go into really busy places (the metro, train stations, shopping streets etc.) When I lived in London I used to take Bluetooth-enthusiasts to a specific spot in Victoria station that is a complete Bluetooth-killer for some reason. Cables just don't have these problems ...