How can I restrict in-app purchases on my Android device?
Please follow the following steps:
Enter the Google Play Store app
Click the 'Menu' button.
Select 'Settings' option
Look for the 'User Controls' section and select the 'Require password for purchases'
Select the first option 'For all purchases through Google Play on this device'
You will now have to enter your Google Play password for all purchases.
Do note: the instructions above may vary from the different devices.
