President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE has reportedly been using his personal cellphone more frequently to talk with outside advisers and Republican lawmakers.

CNN reported Monday that the president has increasingly been making private calls on his personal phone rather than through the White House switchboard. Multiple sources speculated to the news outlet that it is an indicator of chief of staff John Kelly John Francis KellyMORE’s waning influence over the president’s day-to-day habits.

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“Kelly used to be more clearly the gatekeeper than he is now from a Hill standpoint,” one source told CNN. “I don’t know that [Trump] is even running it by the chief of staff anymore.”

Kelly receives a print-out of which leaders and individuals Trump contacts through the White House switchboard.

One source speculated that the president “doesn't want Kelly to know who he's talking to."

Former President Obama used a personal Blackberry during his time in office, but the device was equipped with security measures to protect classified discussions.

Kelly previously banned White House staffers from carrying personal cellphones in the building from 6 a.m. to 8 p.m., Monday through Friday. That measure was implemented amid renewed concerns over leaks within the administration following the release of the book "Fire and Fury: Inside the Trump White House."