Former White House aide Omarosa Manigault Newman Omarosa Onee Manigault NewmanTrump hurls insults at Harris, Ocasio-Cortez and other women Pelosi makes fans as Democrat who gets under Trump's skin The Memo: Impeachment's scars cut deep with Trump, say those who know him MORE on Thursday disputed President Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE's claim that he only uses government phones, saying the president's "memory is fading fast."

"[Trump] ALWAYS used his personal iPhone in WH for calls even after being told over and over again about the security risk," she tweeted.

"He disliked his secure gov issued cell- he said it was slow and 'buggy.'"

Clearly #45 memory is fading fast... He ALWAYS used his personal iPhone in WH for calls even after being told over and over again about the security risk. He disliked his secure gov issued cell- he said it was slow and “buggy” pic.twitter.com/k3ZruFWGzS — OMAROSA (@OMAROSA) October 25, 2018

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Trump's tweet that Omarosa took issue with was criticizing a New York Times report alleging that the president's personal calls were being listened in on by Russia and China to gain political leverage.

"I only use Government Phones, and have only one seldom used government cell phone," Trump tweeted.

"Story is soooo wrong!"

The so-called experts on Trump over at the New York Times wrote a long and boring article on my cellphone usage that is so incorrect I do not have time here to correct it. I only use Government Phones, and have only one seldom used government cell phone. Story is soooo wrong! — Donald J. Trump (@realDonaldTrump) October 25, 2018

The Times's public relations Twitter account quickly countered Trump's claim, saying that "The New York Times is confident in the accuracy of our reporting."

The paper initially reported that aides have asked Trump to stop using three personal iPhones that are not secure, but he has refused to give them up.

Omarosa has frequently criticized Trump since leaving the White House, including claiming that he needs a mental evaluation. She also wrote a book about her time in the Trump administration, titled "Unhinged: An Insider's Account of the Trump White House."