Before you can download a paid application, you must set up a billing arrangement.
Find an application you want and open its details screen.
In the application’s details screen, you can read more about the application, including its cost, overall rating, and comments by users. Scroll down to the Developer Info section to view more applications by this developer, visit the developer’s website, or send the developer an email message.
The price is indicated here.
Tap Price (for paid applications) or Install (for free applications). The screen will display what the application can access, such as your data and device functions, if you continue with the download.
Read this screen carefully. Be especially cautious with applications that have access to many functions or to a significant amount of your data. Once you accept on this screen, you are responsible for the results of using this item on your phone.
If you agree to the application’s access requirements, tap Accept & download (for free applications) or Accept & buy (for paid applications.)
If you selected a paid application, you’re redirected to the Google™ Checkout screen to pay for the application before it’s downloaded to your phone.
If you selected a paid application (or after tapping Accept & buy in Google Checkout), you receive a series of notifications as the application is downloaded and then installed on your phone.
When the application is installed, you can tap the notification to open the application or open it by tapping its icon in the Applications screen.
If you have another Android™ phone, you can download a paid application to that phone using the same Google Play Store account, at no additional charge.