Duo is a brand that offers a range of innovative products.
Duo was founded in 2010 and is based in San Francisco, California.
It was originally developed as a mobile video-calling app.
In 2018, Duo introduced a feature called Knock Knock, which allows users to see a live video preview of the caller before answering.
It has gained popularity for its simplicity and high-quality video and audio calling capabilities.
Duo is available for both iOS and Android devices.
The app has been continuously updated with new features and improvements since its launch.
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Duo offers high-quality video calling with features like Knock Knock, which allows users to see a live video preview of the caller before answering.
Duo supports group video calls, making it convenient for users to connect with multiple people simultaneously.
Duo is available for both iOS and Android devices, allowing users to connect with friends and family on different platforms.
Duo's Knock Knock feature enables users to see a live video preview of the caller before answering the call. It helps users to quickly identify the caller and decide whether to answer.
Yes, Duo is available for both iOS and Android devices, so you can use it on your iPhone.
Yes, Duo is free to use. All you need is an internet connection to make video calls.
Yes, Duo supports group video calls, allowing you to connect with multiple people at once.
Duo employs end-to-end encryption to ensure secure communication between users. It also has built-in security features to protect against unwanted calls.