
Originally Posted by
hpham
I'm not sure if you're thinking about WiFi Calling or Voice-over-Internet (VoIP).
* WiFi Calling is a fallback means for when you have no or weak cell signal but good WiFi signal. The call is made/received using your cell phone number and will use the cell service and/or WiFi. On TF/Verizon, minutes are still deducted for WiFi calls. From what forum members posted, TF/AT&T doesn't deduct minutes for WiFi Call.
* VoIP places/receives the call through Internet, using an app like (Google) Voice app. It uses a different "phone icon" from the one that the cell calls use. Typically, the caller will see your Google Voice number as the caller, although there are ways around it.
We can discuss in further details once you've clarified which calling method you're asking about.
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