Prior to being elected president, Trump used an Android phone, made by Google, which the NSA advised him to abandon due to security concerns. That is when he switched to using iPhones. Since his election to the presidency, Trump has routinely used three iPhone cell phones. He uses one of them to access a limited list of authorized applications, including Twitter. He uses the second iPhone for phone calls, but cannot use it to send texts, take pictures, or download and install applications. Both of these iPhones have been vetted and secured by the National Security Agency (NSA).

But The New York Times said on Wednesday that, despite the advice of the NSA, the US president continues to use a third iPhone, which is his personal device. The newspaper cited “current and former American officials” who said that the president’s third iPhone has not been secured by the NSA, and is thus “no different from hundreds of millions of iPhones in use around the world”. Trump uses that third iPhone to call many of his old friends and associates. The president has been repeatedly warned, sources said, to abandon the use of his unsecured third iPhone. Moreover, US intelligence agencies have confirmed that Chinese, Russian, and possibly other spy agencies have been “routinely eavesdropping” on the US president’s calls made on his personal iPhone.

To some extent, Trump has heeded the advice of his intelligence agencies in recent months and has begun to rely on his secure White House landline to make important calls, thus avoiding cell phones altogether. But he refuses to give up use of his iPhones, despite repeated warnings by the NSA, sources told The Times. They added that “they can only hope [Trump] refrains from discussing classified information when he is on them”. The president’s use of unsecured phone devices adds to what sources described as “frustration” with his “casual approach” to communications security. In July of this year, Nada Bakos, a 20-year veteran of the Central Intelligence Agency, said in an editorial that President Trump’s “Twitter feed is a gold mine for every foreign intelligence agency”. The CIA veteran described Trump’s use of social media is too impulsive and potentially dangerous from a national-security perspective.