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It’s possible, depending on your carrier, that it uses Wi-Fi for calls, but doubt that’s what he meant. Either way, in your specific use case, I agree, turning off Wi-Fi would save power, I just don’t believe it’s 2x difference though.



I just looked it up and found the official page on Wifi calling[1], but yeah, that option isn't there on my phone.

[1]https://support.apple.com/en-nz/HT203032




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