def METHOD_NAME(self, title, msg, cust_id=None, apiKey=None):
    """
    Send a SMS notification
    msg: The message to send (unicode)
    title: The title of the message
    userKey: The pushover user id to send the message to (or to subscribe with)
    return: True if the message succeeded, False otherwise
    """
    if cust_id is None:
        cust_id = app.FREEMOBILE_ID
    if apiKey is None:
        apiKey = app.FREEMOBILE_APIKEY
    log.debug(u'Free Mobile in use with API KEY: {0}', apiKey)
    # build up the URL and parameters
    msg = '{0}: {1}'.format(title, msg.strip())
    msg_quoted = quote(msg.encode('utf-8'))
    URL = 'https://smsapi.free-mobile.fr/sendmsg?user={user}&pass={api_key}&msg={msg}'.format(
        user=cust_id,
        api_key=apiKey,
        msg=msg_quoted,
    )
    req = Request(URL)
    # send the request to Free Mobile
    try:
        urlopen(req)
    except IOError as e:
        if hasattr(e, 'code'):
            error_message = {
                400: 'Missing parameter(s).',
                402: 'Too much SMS sent in a short time.',
                403: 'API service is not enabled in your account or ID / API key is incorrect.',
                500: 'Server error. Please retry in few moment.',
            }
            message = error_message.get(e.code)
            if message:
                log.error(message)
                return False, message
    except Exception as e:
        message = u'Error while sending SMS: {0}'.format(e)
        log.error(message)
        return False, message
    message = 'Free Mobile SMS successful.'
    log.info(message)
    return True, message