By Kate Holton BARCELONA, Spain (Reuters) – Chinas Huawei Technologies believes it can take advantage of recent changes in how operators in the United States sell phones to get a foothold in the all-important market, an executive with its consumer division said on Sunday. But the group, which lags market leader Samsung and Apple, has yet to gain a foothold in the high-end segment of developed markets such as the United States, where it is viewed with suspicion after lawmakers flagged Chinese telecommunications equipment as potential security risks. After launching five new devices at the Mobile World Congress trade fair in Barcelona, Huaweis Colin Giles said the group was taking early steps in the United States to build better relationships with mobile operators and directly with consumers via online shops.