Google Duo is the highest quality video-calling app*. It’s simple, reliable and works on smartphones and iPads. Features: Simple interface Choose a contact and jump right in, with a simple interface that makes video calling as easy as one tap. The highest quality video-calling app* Experience more reliable video calls with excellent video quality whether you’re on Wi-Fi or on the go. Works cross-platform Duo works across both operating systems on smartphones and iPads, so you can call and hang out with friends and family using just one app. Knock Knock See who’s calling before you answer with a live video preview. Video messages Want to share a quick moment between calls, or a friend can’t answer? No problem. Leave a video message to capture any moment. Voice calls Make voice-only calls to your friends when you can’t chat over video. *Based on a Signals Research Group technical study comparing video degradation time over 3G, LTE and Wi-Fi. **Data charges may apply. Check with your operator for details.