This feature is now integrated into the latest versions of Android in a more standard way. One day, you’ll hopefully be able to get any Android phone and enable Wi-Fi calling on any cellular carrier’s network if that carrier supports it, just as you can with iPhones.
If Wi-Fi calling is an option, you should find it in a standard place. Open the Settings app on your Android phone and tap the “More” or “More Settings” button under Wireless & network.
You’ll see a “Wi-Fi Calling” option here — activate it to enable the feature. If you don’t want to use Wi-FI calling, you can disable it from here, too.
This option won’t appear unless you’re using a phone with Wi-Fi calling support and are connected to a cellular network that works with it. But this is a quick way to check if you can currently use Wi-Fi calling. This option should hopefully become more standardized and widely available in the future.
As this is Android, it’s possible that your cellular carrier’s customizations — or the manufacturer’s customizations — have put a “Wi-Fi calling” option in a different place in the interface. You may need to search for the name of your smartphone, “Wi-FI calling”, and possibly the name of your cellular carrier.
If you don’t see the “Wi-Fi calling” option there? Your cellular carrier may not offer this feature, or it may not work with your specific device. But there are other solutions you can use it you want to call and text from Wi-Fi.
Google’s Hangouts Dialer app will allow you to place phone calls from a Wi-Fi network. Most calls to the US and Canada are free, so this is an easy way to place calls to the US and Canada from a Wi-Fi network. If you don’t have a Google Voice account, the recipient will see one of Google’s seemingly random phone numbers appear on their caller ID.