iOS - CallKit

Last Updated: Apr 24, 2017 04:14PM PDT
CallKit is a new feature for iOS 10 for inbound calls from VOIP apps such as trutext. It allows inbound calls to look just like a native inbound call shown below. It will display "trutext Audio" at the top. Be sure to have iOS version 10.2.1 or higher. 

To toggle CallKit on or off, go to trutext > Menu > Settings > CallKit.