Wi - Fi Calling is a feature that lets an iPhone effectively re - route Mobile River call over the Wi - Fi internet to which you ’re connected — if it has the proper qualities rather of using the cellular mesh . Most carrier confirm Wi - Fi Calling .
Macworld reader Steve wonder if there ’s a drawback to Wi - Fi Calling . His iPhone typically pluck up a stronger Wi - Fi sign than a cellular one .
There ’s none that I can think of , even though carriers mostly offer no benefit to you offloading phone calls from their networks to your own or someone else ’s . ( At one point in time , T - Mobile ’s Wi - Fi vocation option had some actual cost advantages . )
Voice calls over 3 gibibyte and 4 G networks are just data , anyway . Calls use up very little bandwidth , so even on a low - speed broadband web or one that has usage chapiter , the data consume is minimal .
Turning on Wi - Fi Calling seems to have no drawbacks .
Wi - Fi Calling also optionally lets youconnect all other variety of Apple devicesusing the same iCloud bill so you’re able to make calls from them even if the iPhone is power down or not on the same Wi - Fi web ! That ’s a self-aggrandizing advantage depending on how you operate .
Apple does n’t disclose the specific means by which it tests that a Wi - Fi electronic internet has worthy characteristics for Wi - Fi Calling , but I expect it do a quick mental test for data loss and latent period , or the time it takes for data to get down transmitting rather than its overall speed .
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