the people comparing this to the hillary email server are ignorant.
I'm sorry, but I never bought into the notion that Hillary Clinton did anything really problematic with this email server. It seems very out of character for her to share significant state secrets through a low-grade channel. I think it is far more plausible that she emailed about some things that were leaked by Edward Snowden or somebody else. Technically those things were (and quite possibly still are) state secrets, but hacking those servers would not reveal anything very interesting.
They are speculating the phone that he is using.
The word 'speculating' is an understatement. People have gone over old photos with DT's cellphone in it, and made a pretty solid identification of the type he was using. As in 'I am not aware of any other phone that has all these visual cues.' I think it is established that at least at the time of those photos he was using a fairly old Samsung Android phone. Of course, he may have replaced it with something more modern in the meantime.
and directly linking to other liberals mad that hes not using a trivial service like twitter from a phone that also handles top secret matters. I feel from a security standpoint there is nothing wrong with what he is doing with the phones.
That he's using twitter on an insecure phone is by itself obviously not a security issue. The issue is that he may be doing other things with that phone as well. Like making sensitive phone calls. It is already pretty well documented that he has violated security protocol in other instances, so that's not exactly wild speculation. And even just carrying an insecure phone around may be a security issue. AFAIK it is against Secret Service protocol, and it is easy to see why; it is like he's carrying a location tracker.