Well, I prefer to trade on mobile phone but I usually enjoy trading on laptop because the view is really more amazing compared to mobile phone but because I don't usually go out with my laptop all time I find myself trading on phone mostly all the time and sometimes even while at home I still use phone because it has gotten used to me l, so am reluctant about using laptop for trading.
The GUI is nicer on phone to me than computer. If it is tablet, it is also good but which is also either Android or iOS. Only what I like about the computer is bigger screen and not the GUI. Some people posted already that they use computer for making analyses while trading with phone. It is true that charts are better on computer.
About trading while not at home, I do not see it convenient for me. I prefer to just trade while I am at home which can help me to focus on what I am doing. If outside, I would be distracted.