If you can not access the Google Play Store Google Play Store on your mobile device, you will have some common signs that will tell you if your device are not properly connected.
The downloads do not start or stay at 0%.
The downloads are completed when a Wi-Fi connection is used, but not when connecting mobile or data used vice versa.
Your downloads exceeded the timeout.
You can not access Hangouts.
Play Google hangs at the "Loading ...".
Your Google account is not syncing.
If you think you have problems with network connectivity, contact your wireless service provider or Internet.
Troubleshooting Wi-Fi
Checks if the firewalls are blocking access to ports requires Google Play (TCP and UDP 5228).
Reboot the router and the mobile device.
Turns on and off airplane mode.