We want to make sure you can stay connected and always count on your phone. There wouldn't be a need to turn wi-fi calling off specifically. If you're not on wi-fi and not able to use it then wi-fi calling won't work whether it is on or not. You can turn wi-fi as a whole off to potentially save battery as bearone21 suggested though. What is the main reason you use wi-fi calling? How does your service work in the location you have wi-fi without wi-fi on?
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