How to call without wifi on iphone

- How to call wifi on iphone
- How to call using wifi on iphone
- How to call via wifi on iphone
- How to call over wifi on iphone
- How to call through wifi on iphone
- How to call wifi calling on iphone
- How to call off wifi on iphone
- How to call someone on wifi iphone
- How to call someone using wifi on iphone
- How to wifi call on iphone without sim card