google-material-design-icons/android/notification/mms/materialiconsround/black/res/drawable/round_mms_24.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="24"
    android:viewportHeight="24"
    android:tint="?attr/colorControlNormal">
  <path
      android:fillColor="@android:color/white"
      android:pathData="M20,2H4c-1.1,0 -2,0.9 -2,2v18l4,-4h14c1.1,0 2,-0.9 2,-2V4c0,-1.1 -0.9,-2 -2,-2zM5.63,13.19l2.49,-3.2c0.2,-0.25 0.58,-0.26 0.78,-0.01l2.1,2.53 3.1,-3.99c0.2,-0.26 0.6,-0.26 0.8,0.01l3.51,4.68c0.25,0.33 0.01,0.8 -0.4,0.8H6.02c-0.41,-0.01 -0.65,-0.49 -0.39,-0.82z"/>
</vector>