If you can't install an app on your mobile phone, there may be several causes of the problem.
To install apps, there needs to be enough memory.
Solution: Uninstall apps
Some apps aren't available in all countries or they're made available at different times.
Solution: Install apps from Google Play
To install apps, your Google account needs to be activated on your mobile phone.
Solution: Activate Google account on mobile phone
The payment information used when buying apps is connected to your Google account. If the information is incorrect, it needs to be updated before you can buy apps.
Solution: Log on to Google Play from a computer and update your payment information.