1: Go to accounts page From the Google Play store, click on your profile picture
in the top-right corner of the interface and then click on the Account link in the box that appears, to go to your main Accounts page.
2: Go to Dashboard When you’re on the Accounts page, click on the Dashboard link
which can be found under the Account section in the left-hand column. All of the Google services that you use will now be listed.
3: Go to Wallet/Checkout Scroll down the list and eventually you will come to a section called ‘Wallet/Checkout’. Click on the arrow next to the section header and this will display ‘Payment options’ – click on this.
4: Add a card If you already have a payment in place, it will be displayed here. To add a new payment method, click on the ‘Add a credit or debit card’ button at the top of the screen and then fill in the details.
Redeeming gift codes inside Google Play Enter the code to top-up your account balance
1 If you’ve received a Google Play gift card then, on the main Google Play home screen, click on the ‘Redeem gift card’ link underneath the main shop categories.
2 Enter the gift card or promo code into the space provided. Once processed, the funds will be instantly credited to your account for use in the store.
3 You can now continue to shop inside the Play store and spend your virtual cash on music, films, books or apps for your desktop or Android device.