T-Mobile provides you with the ability to purchase various services and products from certain third-party service providers (e.g., games, apps, ringtones, etc.) and have the charges for those services or products included on your T-Mobile bill. You are responsible for all charges on your T-Mobile bill. You have the option, at no additional charge, to block the ability to have third-party charges included on your T-Mobile bill. Unless you choose to activate this blocking option, you authorize T-Mobile to place those charges on your bill when you purchase those products or services.