diff --git a/app/build.gradle b/app/build.gradle
index d9669a8..af99fbc 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -6,8 +6,8 @@ android {
         applicationId "space.neothefox.laytray"
         minSdkVersion 23
         targetSdkVersion 26
-        versionCode 7
-        versionName "1.6"
+        versionCode 8
+        versionName "1.7"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
diff --git a/app/src/main/java/space/neothefox/laytray/MainActivity.java b/app/src/main/java/space/neothefox/laytray/MainActivity.java
index e45c326..69ab4c2 100644
--- a/app/src/main/java/space/neothefox/laytray/MainActivity.java
+++ b/app/src/main/java/space/neothefox/laytray/MainActivity.java
@@ -1,8 +1,11 @@
 package space.neothefox.laytray;
 
+import android.app.AlertDialog;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.graphics.Color;
 import android.os.Build;
 import android.provider.Settings;
@@ -26,7 +29,7 @@ import android.widget.Toast;
 import java.util.Map;
 
 public class MainActivity extends AppCompatActivity
-implements View.OnClickListener, SharedPreferences.OnSharedPreferenceChangeListener {
+implements View.OnClickListener, DialogInterface.OnClickListener, SharedPreferences.OnSharedPreferenceChangeListener {
 
     LinearLayout layoutLister;
     SharedPreferences layouts;
@@ -44,6 +47,15 @@ implements View.OnClickListener, SharedPreferences.OnSharedPreferenceChangeListe
         addButton.setOnClickListener(this);
         layouts.registerOnSharedPreferenceChangeListener(this);
 
+        if(!isPackageInstalled("com.blackberry.keyboard", getApplicationContext().getPackageManager()))
+        {
+            AlertDialog.Builder builder = new AlertDialog.Builder(this);
+            builder.setTitle(R.string.unsupported_device)
+                    .setMessage(R.string.unsupported_device_description)
+                    .setNeutralButton(R.string.close, this)
+                    .show();
+        }
+
         if (!isAccessibilitySettingsOn(getApplicationContext())) {
             Toast.makeText(this, R.string.toast_enableme,
                     Toast.LENGTH_LONG).show();
@@ -250,4 +262,17 @@ implements View.OnClickListener, SharedPreferences.OnSharedPreferenceChangeListe
         updateLayouts();
     }
 
+    private boolean isPackageInstalled(String packagename, PackageManager packageManager) {
+    try {
+        packageManager.getPackageInfo(packagename, 0);
+        return true;
+    } catch (PackageManager.NameNotFoundException e) {
+        return false;
+    }
+}
+
+    @Override
+    public void onClick(DialogInterface dialogInterface, int i) {
+        this.finish();
+    }
 }
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index f19830e..8450f74 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -5,7 +5,9 @@
     <string name="activity_info">Associate layout name with layout icon</string>
     <string name="title_activity_settings">Settings</string>
     <string name="toast_enableme">You have to enable the service!</string>
-
+    <string name="unsupported_device">Unsupported phone</string>
+    <string name="unsupported_device_description">This phone is missing the BlackBerry Keyboard. LayTray will not work without it.</string>
+    <string name="close">Close</string>
     <!-- Strings related to Settings -->
 
     <!-- Example General settings -->