China's yuan slipped against the dollar while falling to a near two-year low versus its major trading partners on Friday, as U.S. President Donald Trump and Chinese leader Xi Jinping held a much-anticipated call but left key issues that have stoked tensions between the world's two largest economies unresolved.

Confirmation by the Trump Administration of a phone call between President Trump and Chinese President Xi sent Treasury yields higher.

U.S. stock futures rose after reports Trump and Xi spoke on the phone, triggering hopes of a US-China trade deal soon.