Mobile phone technology can help to bring financial services to the 80 percent of African women who do not have a bank account and bolster the growth of the world's poorest continent, Nigeria's finance minister, Ngozi Okonjo-Iweala, said on Monday.Okonjo-Iweala was one of a dozen government, finance and business leaders who met in Nairobi on Monday to roll out a plan to bring financial services to more poor African women."It's not just about empowering women, it's about economic growth," said Okonjo-Iweala, honorary co-chair of the newly-formed Africa Advisory Council of the U.S.-based charity Women's World Banking.