diff --git a/app/InCallService/src/org/lineageos/mediatek/incallservice/GainUtils.java b/app/InCallService/src/org/lineageos/mediatek/incallservice/GainUtils.java
index 2588c79..b62558a 100644
--- a/app/InCallService/src/org/lineageos/mediatek/incallservice/GainUtils.java
+++ b/app/InCallService/src/org/lineageos/mediatek/incallservice/GainUtils.java
@@ -1,15 +1,20 @@
 package org.lineageos.mediatek.incallservice;
 
+import android.os.SystemProperties;
 import android.media.AudioSystem;
-
 import android.util.Log;
 
 public class GainUtils {
     public static final String LOG_TAG = "MediatekInCallService";
 
     public static void setGainLevel(int audioDevice, int gainIndex, int streamType) {
+        int maxStep = SystemProperties.getInt("ro.config.vc_call_vol_steps", 7);
         String parameters = String.format("volumeDevice=%d;volumeIndex=%d;volumeStreamType=%d",
-                                          audioDevice, Math.min(7, gainIndex), streamType);
+                                          audioDevice, 
+                                          Math.round(
+                                            (15.0 / Math.log(maxStep + 1.0))
+                                            * Math.log(Math.min(maxStep, gainIndex) + 1.0)),
+                                          streamType);
         Log.d(LOG_TAG, "Setting audio parameters to: " + parameters);
         AudioSystem.setParameters(parameters);
     }