I managed to install Google Phone 2.5.11_rc8 from Google Play before they realised they shouldn't have made it generally available and withdrew it.
It works brilliantly and it's finally great to have Blocked Numbers and Google ID at last!
Looks like Google Play have deleted the Google Phone app again with version Google Phone 2.5.12_rc9 not installing on my Style and being restricted to Nexus devices again.
However it is still available from APKMirror and you should be able to sideload it on stock phone.
Google Phone 2.5.11_rc8 APK Download by Google Inc. - APKMirror
It works brilliantly and it's finally great to have Blocked Numbers and Google ID at last!
Looks like Google Play have deleted the Google Phone app again with version Google Phone 2.5.12_rc9 not installing on my Style and being restricted to Nexus devices again.
However it is still available from APKMirror and you should be able to sideload it on stock phone.
Google Phone 2.5.11_rc8 APK Download by Google Inc. - APKMirror