In this article, we'll walk through the most frequent causes for call issues. Specifically, this article aims to focus on issues that prevent calls from being delivered to your device.
On the mobile applications, incoming calls are delivered over the platform's native push notification delivery system. On iOS, we use VoIP push notifications. On Android, we use standard high-priority push notifications. In either case, call delivery is generally reliable unless the device is simply not connected to a network, or has a very poor quality connection.