HANOI -- Vietnam's largest conglomerate, Vingroup, has signed a contract to produce smartphones for a U.S. company, marking the next phase in its aggressive expansion into overseas markets.
Vingroup is expected to produce a total of up to 2 million units of four 4G-compatible smartphone models under an original equipment manufacturer deal. Some handsets have already been shipped. Though the company has not disclosed its client, Bloomberg reports that it is wireless carrier AT&T.
