A Foxconn factory making the iPhone 5 in northern China reopened on Tuesday, a manager said, a day after it shut down following a huge workers' brawl that took 5,000 police several hours to quell.

Foxconn - the world's largest maker of computer components - assembles products for Apple, Sony and Nokia among others and employs one million people in China.

A total of 40 men in Taiyuan in Shanxi province suffered injuries after a "personal dispute between several employees" escalated into a 2,000-person fight in a dormitory, Foxconn's Taiwanese parent company Hon Hai said in a statement.

But on Tuesday a company manager surnamed Yang said that the "Foxconn plant in Taiyuan has reopened", adding that the products it makes include Apple's latest smartphone.