google-material-design-icons/android/communication/duo/materialiconsround/black/res/drawable/round_duo_20.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="20dp"
    android:height="20dp"
    android:viewportWidth="20"
    android:viewportHeight="20"
    android:tint="?attr/colorControlNormal">
  <path
      android:fillColor="@android:color/white"
      android:pathData="M16.5,2H10c-4.42,0 -8,3.58 -8,8s3.58,8 8,8s8,-3.58 8,-8V3.5C18,2.67 17.33,2 16.5,2zM14,12.5l-2.5,-1.86v1.86H6v-5h5.5v1.86L14,7.5V12.5z"/>
</vector>