Index: res/values/strings.xml
===================================================================
--- res/values/strings.xml
+++ res/values/strings.xml
@@ -216,5 +216,7 @@
     <string name="telepathy_permission_explanation">To read and write SMS from your desktop you need to give permission to SMS</string>
     <string name="telephony_permission_explanation">To see phone calls and SMS from the desktop you need to give permission to phone calls and SMS</string>
     <string name="telephony_optional_permission_explanation">To see a contact name instead of a phone number you need to give access to the phone\'s contacts</string>
+    <string name="telephony_pref_blocked_title">Blocked numbers</string>
+    <string name="telephony_pref_blocked_dialog_desc">Don\'t show calls and SMS from these numbers. Please specify one number per line</string>
 
 </resources>
Index: res/xml/telephonyplugin_preferences.xml
===================================================================
--- /dev/null
+++ res/xml/telephonyplugin_preferences.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <EditTextPreference
+        android:key="telephony_blocked_numbers"
+        android:title="@string/telephony_pref_blocked_title"
+        android:dialogMessage="@string/telephony_pref_blocked_dialog_desc">
+    </EditTextPreference>
+
+</PreferenceScreen>
\ No newline at end of file
Index: src/org/kde/kdeconnect/Plugins/TelephonyPlugin/TelephonyPlugin.java
===================================================================
--- src/org/kde/kdeconnect/Plugins/TelephonyPlugin/TelephonyPlugin.java
+++ src/org/kde/kdeconnect/Plugins/TelephonyPlugin/TelephonyPlugin.java
@@ -25,10 +25,12 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.media.AudioManager;
 import android.os.Build;
 import android.os.Bundle;
+import android.preference.PreferenceManager;
 import android.support.v4.content.ContextCompat;
 import android.telephony.SmsMessage;
 import android.telephony.TelephonyManager;
@@ -49,6 +51,7 @@
 
     private final static String PACKAGE_TYPE_TELEPHONY = "kdeconnect.telephony";
     public final static String PACKAGE_TYPE_TELEPHONY_REQUEST = "kdeconnect.telephony.request";
+    private static final String KEY_PREF_BLOCKED_NUMBERS = "telephony_blocked_numbers";
 
     private int lastState = TelephonyManager.CALL_STATE_IDLE;
     private NetworkPackage lastPackage = null;
@@ -114,6 +117,9 @@
 
     private void callBroadcastReceived(int state, String phoneNumber) {
 
+        if (isNumberBlocked(phoneNumber))
+            return;
+
         NetworkPackage np = new NetworkPackage(PACKAGE_TYPE_TELEPHONY);
 
         int permissionCheck = ContextCompat.checkSelfPermission(context,
@@ -234,6 +240,9 @@
 
         String phoneNumber = messages.get(0).getOriginatingAddress();
 
+        if (isNumberBlocked(phoneNumber))
+            return;
+
         int permissionCheck = ContextCompat.checkSelfPermission(context,
                 Manifest.permission.READ_CONTACTS);
 
@@ -289,6 +298,18 @@
         return true;
     }
 
+    private boolean isNumberBlocked(String number) {
+        SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(context);
+        String[] blockedNumbers = sharedPref.getString(KEY_PREF_BLOCKED_NUMBERS, "").split("\n");
+
+        for (String s: blockedNumbers) {
+            if (number.equals(s))
+                return true;
+        }
+
+        return false;
+    }
+
     @Override
     public String[] getSupportedPackageTypes() {
         return new String[]{PACKAGE_TYPE_TELEPHONY_REQUEST};
@@ -308,4 +329,9 @@
     public String[] getOptionalPermissions() {
         return new String[]{Manifest.permission.READ_CONTACTS};
     }
+
+    @Override
+    public boolean hasSettings() {
+        return true;
+    }
 }