Starting multiple instances of the same Activity from Service
<activity
   android:name=".ui.dialogs.MalfunctionActivity"
   android:theme="@style/MyDialog"
   android:launchMode="standard">

Intent displayMalf=new Intent(this, MalfunctionActivity.class);
    displayMalf.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(displayMalf);