To resolve the error code 905 in Google play store do the following:
- Go to your device settings >
- Tap Applications / Manage applications >
- Scroll over to All Applications >
- Scroll down to Google Play >
- Select uninstall updates.
This will uninstall the previous update and now you will be on an older version of the Play store.
- Exit the Settings and open the Google Play store >
- The Play store will automatically update >
- Re-install the app and hopefully, the issue will be solved.