Text analysis of Trump's tweets confirms he writes only the (angrier) Android half

I don't normally post about politics (I'm not particularly savvy about polling, which is where data science has had the largest impact on politics). But this weekend I saw a hypothesis about Donald Trump's twitter account that simply begged to be investigated with data: Every non-hyperbolic tweet is from iPhone (his staff). Every hyperbolic tweet is from Android (from him). When Trump wishes the Olympic team good luck, he's tweeting from his iPhone. Is this an artifact showing which tweets are Trump's own and which are by some handler?