- All Republic Wireless 3.0 Phones
The Google Duo application is an app that's used for video calls. It's included with Android 6.0 Marshmallow and above phones from various manufacturers.
While Apple's FaceTime app is only compatible with Apple devices, the Google Duo application works on both Android and Apple devices. This allows Apple and Android users to communicate using the same video chatting service.
FaceTime can't be used to "call" to Duo as they aren't the same service, so each phone must have Duo installed
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