The Three app gives you easy access to your My3 account and much more. The Three app gives you easy access to your My3 account, so you can manage it on the move and much more. Keep track of what you spend, and find helpful guides for common problems such as setting up email on your phone and customising your homescreen. You’ll also be able to discover more about your phone and find useful contact numbers and links to three.co.uk. And you can have fun playing our highly addictive bubble game. If you're on Wi-Fi the app will take you straight to the My3 site in your browser.