You can buy apps with your credit card or on your phone bill. If your service provider offers a billing option, it is visible to you in Store. You can also choose to pay by credit card, if you have valid credit card credentials available on your Nokia account. Follow the link to add credit card info to your Nokia account in a new browser window. Once you have added the info, close the browser window to go back to Store. Before the purchase, you’re asked to confirm the transaction. Once the app purchase is confirmed, the app is downloaded and installed.