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On the old extend support page it just says 2017 for when they would be rolling it out on Android. But nothing more about when or even which phones.
Telus doesn't divulge when their ETA for WiFi Calling on Android will happen. When it came to iOS there wasn't much notice and only a few articles stating as such, and their announcement. The year is young but if i were to guess it would probably be May-July. Just have to see what happens at this point.