BT has announced that its wi-fi hotspot numbers have passed over 7.5 million across the world, as it launches a new BT Wi-fi access app making it easy to find a wi-fi hotspot in the UK and to login from a Windows Mobile device.

The new app, which will be available on the Windows Phone Store is the fourth BT Wi-fi app to launch. It follows the success of iOS, Android and Blackberry apps, which have now passed over two million downloads by BT Broadband customers.

BT Broadband customers have free and unlimited access to the largest wi-fi network in the world. The numbers include more than 65,000 in Birmingham and Leeds, around 72,000 in Manchester, Edinburgh and Sheffield, and more than 59,000 in Liverpool, Brighton, Bristol and Cardiff.