You would need to restore the iPhone and go through set up again to use the Move to iOS app to transfer all data, or if you don't want to start over manually move the data to the iPhone item by item. You may need a computer as an intermediate. Copy items from the Android device to a computer and then sync them to the iPhone.
link-> Restore your iPhone, iPad, or iPod to factory settings - Apple Support
You can also set up your Google account to access mail, contacts, notes and calendar through the default Apple Apps, and download the Google Apps from the iOS App Store for things like Photos, Drive documents, Email etc...
link-> Add an email account to your iPhone, iPad, or iPod touch - Apple Support
link-> Google Apps on the iOS App Store - Apple.com