When someone calls with Duo, the app turns on the caller's video camera (but not the microphone) and displays a live feed to the recipient. Toggling front- and rear-facing cameras is also a cinch.ĭuo's killer feature is Knock Knock. The interface is simple yet elegant, and I especially like the smooth animations when switching between a full-screen view through my camera and a full screen view of the caller's camera. The service scours your Contacts list and matches you against other Duo users-there is no way to manually input numbers. You confirm your phone number by responding to a text message. Getting started requires approving the privacy permissions for access to the camera, contacts, and notifications. I'll run through the basics here, though, and I'll also talk about the iOS-specific aspects of Duo. Speak to Me The iPhone version is effectively identical to the Duo Android app, which I've reviewed separately. It's compatible with all current iOS devices, and I had no trouble installing it on my iPhone 6. While the Android app works on devices running operating system versions as old as 4.1, the iPhone version only works on iOS 9 or later-then again, that's most iPhones. Best Hosted Endpoint Protection and Security Software.
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