Which smartphone is Donald Trump actually using?
Donald Trump could be facing even more scrutiny following claims he is putting national security at risk by using his old smartphone.
The President's phone use is under scrutiny once more after he apparently ignored Secret Service rules and continued tweeting and accessing the internet with his past, unsecured smartphone.
Doing so could put the device at risk of being compromised or even hacked by outsiders.
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Two US senators have written a formal letter asking for clarity on what device Donald Trump is using on a day to day basis.
Before his election, Trump famously used an ancient Samsung Galaxy S3 phone, released back in 2012, which due to its age no longer receives regular security software updates and makes it a potentially severe risk.
It had been reported that following his inauguration President Trump had handed over this device and instead been given a new, secured, phone that has been approved by the Secret Service, and with a new number that only a select few people will know.
However the New York Times later reported that not only does Trump still have his older phone, he still regularly uses it.
President Trump's office line is not thought to be at risk
Now, Senators Claire McCaskill (D-MO) and Tom Carper (D-DE), both of whom are on the Homeland Security committee, have asked for more exact clarification on the President's phone.
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ZDNet reports that the two senators have officially asked the government’s Defense Information Systems Agency if Trump was given a secure smartphone.
The letter also requests more information on the device itself, and how it is protected by the department.
This latter point is crucial, as their letter says, that the “national security risks of compromising a smartphone used by a senior government official, such as the President of the United States, are considerable.”
Possible security risks include, "hackers' ability to access the device to turn on audio recording and camera features, as well as engaging surveillance tools that allow location and other information tracking features."
Whicever device he ends up with, Trump will follow in the footsteps of Barack Obama by maintaining regular use of a smartphone whilst in the Oval Office.
Obama famously insisted on continuing to use his own BlackBerry smartphone when taking office in 2009, resulting in a compromise deal being needed between him and the intelligence agencies.
However unlike Trump, Obama did not use his mobile device to make or receive telephone calls or surf the internet.
He was eventually talked in to upgrading this into an iPhone last year, according to an interview with talk show host Jimmy Fallon, a change which finally allowed him to use email and read the news.