US lawmakers raise concerns over Huawei

WASHINGTON: Chinese tech giant Huawei faces a major setback in efforts to expand in the US smartphone market following renewed national security concerns, documents showed.

Huawei, which appeared to lose a deal with AT&T that would have given it an improved foothold in the handset market, faced criticism from US lawmakers over its intellectual property protection and its ties to Chinese intelligence, according to a letter seen by AFP this week.