To start, the feature is only available to LG V20 users, with support for additional devices coming at a later date (additionally, the device needs to have been purchased directly from Freedom). Moreover, to enable the feature, Freedom Mobile subscribers are required to register their home address with the carrier due to regulation related to 911 calling.
Any Wi-Fi-assisted usage still counts against one’s call and text buckets. That said, Wi-Fi calling is available to all Freedom pre-paid and post-paid plan holders as long as they have a compatible device.
Correction 2: An earlier version of this article mistakenly said calls, texts, pictures and videos count against a subscriber’s call, text and data buckets. Wi-Fi calling does not count against a subscriber’s data bucket. When using Wi-Fi calling, all calls and texts are treated as if the subscriber is on Freedom’s home network, whether that is the case or not.
Per Freedom Mobile: “Calls and text, picture and video messages will be counted against your plan as if they were made from Freedom Mobile’s Home network (including calls, texts and picture messages made using Wi-Fi Calling while outside of Canada).”
Source: Freedom Mobile