One can access Call Phone from Google by going under the Google Voice page. One will need to be in the US and verify their phone number in order to use Google Call Phone.

You phone locking has nothing to do with your Google account.

One can use Google as a phone book by using the Google phone book which can provide you with phone numbers for the specific person you are looking for.

No, Google is not a smart-phone company. Sorry, but it only endorses smart-phone companies.

No, you can't delete Google Play services from your phone. The play store is something that comes with the phone.