Fastest way to query contacts with “mobile phone numbers” on Android

I need to get a distinct list of all contacts from a device and their phone numbers. But wait... We know that some contacts may have multiple numbers assigned, it all depends how each of the users stores his contacts. Here is what i do:

    ContentResolver cr = context.getContentResolver();   
    Uri uri = ContactsContract.Contacts.CONTENT_URI;
    String[] projection = new String[] { ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME };
    String selection =  ContactsContract.Contacts.HAS_PHONE_NUMBER + " = '1'";
    String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
    ArrayList<user> contacts = new ArrayList<user>();

    Cursor users = a.managedQuery(uri, projection, selection, null, sortOrder);

    while (users.moveToNext()) {
        user u = new user();
        u.PhoneId = users.getInt(users.getColumnIndex(ContactsContract.Contacts._ID));
        u.Name = users.getString(users.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

        String homePhone = "", cellPhone = "", workPhone = "", otherPhone = "";
        Cursor contactPhones = cr.query(Phone.CONTENT_URI, null, Phone.CONTACT_ID + " = " + u.PhoneId, null, null);

        while (contactPhones.moveToNext()) {

            String number = contactPhones.getString(contactPhones.getColumnIndex(Phone.NUMBER));
            int type = contactPhones.getInt(contactPhones.getColumnIndex(Phone.TYPE));
            switch (type) {
                case Phone.TYPE_HOME:   homePhone = number; break;
                case Phone.TYPE_MOBILE:  cellPhone = number; break;
                case Phone.TYPE_WORK:   workPhone = number; break;
                case Phone.TYPE_OTHER:  otherPhone = number; break;
                }
        }        
        u.Phone = ((cellPhone!="") ? cellPhone : ((homePhone!="") ? homePhone : ((workPhone!="") ? workPhone : otherPhone)));
    }

    return contacts;

The process works but for my 80 contacts it takes between 1000-2000 miliseconds, and i need to work much faster :)