Airtel HD Voice is a free Android application developed by Airtel that enables VoLTE and VoWiFi calling for Android phones that do not support these services natively. This app is a great solution for Airtel customers who want to enjoy crystal-clear voice calls with their friends and family.

With Airtel HD Voice, you can make HD voice calls over Airtel's 4G network without any additional charges. The app is compatible with Android OS versions 6, 7, 8, and 9, and works only with Airtel SIM cards. The app is easy to use and requires minimal setup.

The app will also enable VoWiFi calling from the next update, which will be a great addition for users who want to make calls over Wi-Fi networks. Overall, Airtel HD Voice is a must-have app for Airtel customers who want to enjoy high-quality voice calls on their Android phones.