How do I pay for my Google Play purchases via my invoice?

Simply by activating this option directly from your Google Play menu.

Here are all the steps:

1. Open the menu of your Google Play app
2. Go to "My Account"
3. Select "Payments and Subscriptions"
4. Click on "Payment Methods"
5. Choose "Add to my mobile bill"

All your purchases will then appear directly on your Orange invoice. They will be invoiceed the following month of purchase and will be visible in the Out-of-Package section of your invoice. Your expenses are grouped together in one place and payment is made in one go.

Find out more on Google Play and Orange.