Did you receive a Google Play gift card and have no idea how to use it or what it’s for?
Applying it to your account takes less than a solid minute.
How to redeem a Google Play gift card on the app
If you have your phone handy, open up the Google Play app and tap on the menu icon in the upper left corner.
Then, tap on Redeem from the menu (it will be toward the bottom of the page).
Lastly, just type in the code on the back of your gift card and tap Redeem.