The New York Times cited USA officials as saying China had a sophisticated approach toward the intercepted presidential phone calls and was seeking to use them to determine what Trump thinks, whom he listens to and how best to sway him.
A 2012 report by a congressional panel said Huawei's equipment was a security risk and the us has banned government personnel from using the company's devices.
Trump, the daily said, uses an iPhone to make calls to his friends.
US intelligence agencies revealed that the personal calls of US President Donald trump on iPhone listen razvedsluzhby Russian Federation and China, writes The New York Times, citing former and current sources in the American intelligence services, reports the Chronicle.info with reference for a New time.
The report also said that the President continued to use a cellphone despite warnings from aides that calls on it were not secure.
Chinese spies are thought to be learning how Mr Trump can be swayed, and who is within his sphere of influence. "Just more made up Fake News!"
Russia, too, dismissed the eavesdropping allegations.
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While Russia is doing the same, it's understood their efforts don't match those of China's because of Mr Trump's friendliness with Mr Putin.
Responding to the Times report, Chinese Foreign Ministry spokeswoman Hua Chunying had said that "certain people in the United States are sparing no efforts to win the best screenplay award for the Oscars". The former president first had an impregnable Blackberry phone and later ditched that for an iPhone modified in a way that it barely functioned. His phone could not make or receive calls, and it has no camera or microphone.
Effectively, it operated as an email device, and Mr Obama was only able to receive correspondence from specific email addresses.
Trump pushed back against the idea that he uses insecure cellphones, tweeting Thursday that he only uses government phones "and have only one seldom used government cell phone".
The practice has raised ongoing concerns over the security of the President's communications, with highly orchestrated diplomatic calls generally taking place on secure phone lines, such as those in the White House Situation Room, the Oval Office or the presidential limousine.
Relations between the world's two largest economies have plummeted in recent weeks with Trump slapping $200 billion in tariffs on Chinese goods amid complaints over Beijing's trade policies. I don't want it on the phone.
During the 2016 USA presidential campaign, Mr Trump often attacked Democratic opponent Hillary Clinton for her use of an unsecured email server during her time as secretary of state.