In a world where we are all connected through phones over audio and video calls, if you are planning to make one such app, you have landed at the right place. We will be building a complete video calling app in React Native, which will allow you to make and receive video calls seamlessly. We'll use VideoSDK for video conferencing and React Native CallKeep to manage the call UI. This is a two-part series in which we will first implement CallKeep in Android and then configure and tweak it for iOS.