Can you make WiFi calls without service?

Related questions

1. How can I find out where someone lives?
2. What is a Google phone number?
3. How can I tell if a phone number is real?
4. Can I call Google to recover my account?
5. How can I recover permanently deleted Facebook account?
6. Is Google a number Yes or no?
7. How much does a sponsored post cost?
8. How do I contact Google customer support?
9. How can I get my old Gmail back?
10. Does Google Voice cost?

Tags

1. #great
2. #phone
3. #carrier
4. #calls
5. #provided
6. #without
7. #device
8. #active
9. #assured
10. #involvement
11. #operate
12. #service
13. #connections
14. #hangouts
15. #leaving