Competition for mobile payments has gone viral as China's Internet duo try to be the nation's largest digital wallet provider.

WeChat, part-social networking, part-payment platform, allows merchants to accept customers' money via Tenpay, the third-party payment tool run by Tencent Holdings Ltd.

The new function was officially launched on Wednesday after trial tests were conducted among vendors across 20 industries from banking to dining and tourism to e-commerce, a company statement sent to China Daily said.