Imagine, you have taken out the battery of your Android phone/tablet due to some reasons (one of them may be resetting the phone if unused for long time) and Google Play displays the following error
No Connection – Retry
In such a case you have to find out whether the data and time has changed. If so you have to set the correct data and time by tapping Settings | Date & Time.
After completing the above steps, Google Play Store should work fine.