String contacts = "";

        Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,null, null, null, null);
        while (cursor.moveToNext()) {
           String contactId = cursor.getString(cursor.getColumnIndex(
           ContactsContract.Contacts._ID));
           String hasPhone = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
           if (Boolean.parseBoolean(hasPhone)) {
                Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +"="+ contactId, null, null);
                phones.moveToNext(); //if you are interested in all contact phones do a while()
                String phoneNumber = phones.getString(phones.getColumnIndex( ContactsContract.CommonDataKinds.Phone.NUMBER));
                phones.close();
                contacts += cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)) + ":" + phoneNumber + "|";
            }
        }
        cursor.close();

        Log.i("Contacts Info", contacts);